Your dog is special! She’s your best friend, companion, and a source of unconditional love. Chances are that you chose her because you like Chihuahuas and you expected her to have certain traits that would fit your lifestyle:
Alert, curious, and busyAdaptable to a wide variety of living conditionsConfident and self-reliantVigilant watchdog with a ready barkDoesn’t need much exerciseRequires minimal groomingHowever, no dog is perfect! You may have also noticed these characteristics:
Can be aggressive, fearful, or snappy if not socialized properlyNeeds early socialization to accept other pets and strangersFragile and easily injured because of her small sizeNeeds frequent attention from her familyBold and fearless, may attack much larger dogsMay have a tendency to bark excessivelyIs it all worth it? Of course! She’s full of personality, and you love her for it! She is a loyal and alert member of the family that demands attention at all times. Her small size makes her an excellent traveling companion.
The Chihuahua is the smallest of all dogs breeds and has 2 coat varieties: smooth and longhaired. Originating in Mexico, they were bred for companionship and are known for their big, erect ears and prominent large eyes. The Chihuahua’s personality could be compared to a terrier’s, as she is fearless and devoted. The Chihuahua is a generally healthy breed with an average lifespan of 12-14 years. They are known to suffer from some common conditions like luxating patella and cataracts. Early detection is the key to a long and happy life, so be sure to schedule routine checkups.
Your Longhaired Chihuahua’s Health
We know that because you care so much about your dog, you want to take good care of her. That is why we have summarized the health concerns we will be discussing with you over the life of your Chihuahua. By knowing about health concerns specific to Longhaired Chihuahuas, we can tailor a preventive health plan to watch for and hopefully prevent some predictable risks.
Many diseases and health conditions are genetic, meaning they are related to your pet’s breed. There is a general consensus among canine genetic researchers and veterinary practitioners that the conditions we’ve described herein have a significant rate of incidence and/or impact in this breed. That does not mean your dog will have these problems; it just means that she is more at risk than other dogs. We will describe the most common issues seen in Longhaired Chihuahuas to give you an idea of what may come up in her future. Of course, we can’t cover every possibility here, so always check with us if you notice any unusual signs or symptoms.
This guide contains general health information important to all canines as well as the most important genetic predispositions for Longhaired Chihuahuas. This information helps you and us together plan for your pet’s unique medical needs. At the end of the booklet, we have also included a description of what you can do at home to keep your Chi looking and feeling her best. You will know what to watch for, and we will all feel better knowing that we’re taking the best possible care of your pal.
General Health Information for your Longhaired Chihuahua
Dental Disease
Dental disease is the most common chronic problem in pets, affecting 80% of all dogs by age two. And unfortunately, your Longhaired Chihuahua is more likely than other dogs to have problems with her teeth. It starts with tartar build-up on the teeth and progresses to infection of the gums and roots of the teeth. If we don’t prevent or treat dental disease, your buddy will lose her teeth and be in danger of damaging her kidneys, liver, heart, and joints. In fact, your Longhaired Chihuahua’s life span may be cut short by one to three years! We’ll clean your dog’s teeth regularly and let you know what you can do at home to keep those pearly whites clean.
Infections
Longhaired Chihuahuas are susceptible to bacterial and viral infections — the same ones that all dogs can get — such as parvo, rabies, and distemper. Many of these infections are preventable through vaccination, which we will recommend based on the diseases we see in our area, her age, and other factors.
Obesity
Obesity can be a significant health problem in Longhaired Chihuahuas. It is a serious disease that may cause or worsen joint problems, metabolic and digestive disorders, back pain and heart disease. Though it’s tempting to give your pal food when she looks at you with those soulful eyes, you can “love her to death” with leftover people food and doggie treats. Instead, give her a hug, brush her fur or teeth, play a game with her, or perhaps take her for a walk. She’ll feel better, and so will you!
Parasites
All kinds of worms and bugs can invade your Chi’s body, inside and out. Everything from fleas and ticks to ear mites can infest her skin and ears. Hookworms, roundworms, heartworms, and whipworms can get into her system in a number of ways: drinking unclean water, walking on contaminated soil, or being bitten by an infected mosquito. Some of these parasites can be transmitted to you or a family member and are a serious concern for everyone. For your canine friend, these parasites can cause pain, discomfort, and even death, so it’s important that we test for them on a regular basis. We’ll also recommend preventive medication as necessary to keep her healthy.
Spay or Neuter
One of the best things you can do for your Chihuahua is to have her spayed (neutered for males). In females, this means we surgically remove the ovaries and usually the uterus, and in males, it means we surgically remove the testicles. Spaying or neutering decreases the likelihood of certain types of cancers and eliminates the possibility of your pet becoming pregnant or fathering unwanted puppies. Performing this surgery also gives us a chance, while your pet is under anesthesia, to identify and address some of the diseases your dog is likely to develop. For example, if your pet needs hip X-rays or a puppy tooth extracted, this would be a good time. This is convenient for you and easy for your friend. Routine blood testing prior to surgery also helps us to identify and take precautions for common problems that increase anesthetic or surgical risk. Don’t worry; we’ll discuss the specific problems we will be looking for when the time arrives.
Genetic Predispositions for Longhaired Chihuahuas
Eye Problems
Not many things have as dramatic an impact on your dog’s quality of life as the proper functioning of his eyes. Unfortunately, Longhaired Chihuahuas can inherit or develop a number of different eye conditions, some of which may cause blindness if not treated right away, and most of which can be extremely painful! We will evaluate his eyes at every examination to look for any signs of concern.
Glaucoma, an eye condition that affects Longhaired Chihuahuas and people too, is an extremely painful disease that rapidly leads to blindness if left untreated. Symptoms include squinting, watery eyes, bluing of the cornea (the clear front part of the eye), and redness in the whites of the eyes. Pain is rarely noticed by pet owners though it is frequently there and can be severe. People who have certain types of glaucoma often report it feels like being stabbed in the eye with an ice pick! Yikes! In advanced cases, the eye may look enlarged or swollen like it’s bulging. We’ll perform his annual glaucoma screening to diagnose and start treatment as early as possible. Glaucoma is a medical emergency. If you see symptoms, don’t wait to call us, go to an emergency clinic!
Dry eye, also known as keratoconjunctivitis sicca or KCS, is common in Longhaired Chihuahuas. The tear glands no longer produce enough tears to keep the eye moist, which results in sore, itchy eyes and infections. Ouch! Symptoms include a thick discharge, squinting, pawing at the eye, or a dull, dry appearance of the eye. This is a painful condition; please call us immediately if you notice any of these signs. We’ll conduct a tear test when we examine him. If he has this disease, we’ll prescribe ointment that you’ll need to apply for the rest of your dog’s life.
Heart Disease
Heart failure is a leading cause of death among Longhaired Chihuahuas in their golden years. Most heart disease in dogs is caused by weakening of a valve. A heart valve slowly becomes deformed so that it no longer closes tightly. Blood then leaks back around this valve and strains the heart. Pets with heart valve disease (sometimes called mitral valve disease) have a heart murmur. If your dog has a heart murmur or outward signs suggesting heart problems, we’ll perform testing to determine the severity of the disease. The same tests will need to be repeated at least every year to monitor the condition. If heart valve disease is diagnosed early, we may be able to prescribe medications that could prolong his life for many years. Veterinary dental care and fatty acid supplementation can help prevent heart disease and weight control can help diminish symptoms.
Chihuahuas are susceptible to a condition called Patent Ductus Arteriosis, in which a small vessel that carries blood between two parts of the heart does not close shortly after birth as it should. This results in too much blood being carried to the lungs, fluid build-up, and strain on the heart. Outward signs may be mild or you may see coughing, fatigue during exercise, weight loss, shortness of breath, or weakness in the hind limbs. We listen for a specific type of heart murmur to diagnose this problem during his examinations. If your pal has this condition, we may recommend surgery to close the problematic vessel.
Knee Problems
Sometimes your Chihuahua’s kneecap (patella ) may slip out of place (called patellar luxation). You might notice that he runs along and suddenly picks up a back leg and skips or hops for a few strides. Then he kicks his leg out sideways to pop the kneecap back in place, and he’s fine again. If the problem is mild and involves only one leg, your friend may not require much treatment beyond arthritis medication. When symptoms are severe, surgery may be needed to realign the kneecap to keep it from popping out of place.
Tracheal Collapse
The trachea, or windpipe, is made up of rings of cartilage, making it look something like a vacuum cleaner’s ridged hose. Just as in the hose, this structure provides flexibility and strength. In Longhaired Chihuahuas, the cartilage rings are sometimes weak or have formed incorrectly. The trachea can collapse and become too narrow, which leads to coughing and difficulty breathing. Most cases of tracheal collapse are mild and are treated symptomatically with medication. When symptoms are severe, surgery may be an option.
Hip Necrosis
Young Longhaired Chihuahuas may be prone to a painful degenerative hip condition called Legg-Calve-Perthes Disease. The exact cause of this condition is still not completely understood, but it is thought to be a problem with blood supply to the hip, which causes the femoral head (the top of the thigh bone) to become brittle and easily fracture. Ouch! Usually occurring between six and nine months of age, it causes pain and lameness in one or both rear legs, and often requires surgery.
Bleeding Disorders
Your Longhaired Chihuahua is prone to a bleeding disorder called hemophilia. We’ll conduct diagnostic testing to assess his blood clotting time before we perform surgery. This is an important test, as we may not know your pet has this disorder until severe bleeding occurs during surgery or after a serious injury.
Liver Problems
Your Chi is more likely than other dogs to have a liver disorder called portosystemic shunt (PSS). Some of the blood supply that should go to the liver goes around it instead, depriving the liver of the blood flow it needs to grow and function properly. If your friend has PSS, his liver cannot remove toxins from his bloodstream effectively. To check for this problem, we’ll conduct a liver function test in addition to a standard pre-anesthetic panel every time he undergoes anesthesia. If he develops symptoms such as stunted growth or seizures, we’ll test his blood and possibly conduct an ultrasound scan of his liver. Surgery may be needed, but in some cases, we can treat with a special diet and medication.
Bladder or Kidney Stones

There are a few different types of stones that can form in the kidney or in the bladder, and Longhaired Chihuahuas are more likely to develop them than other breeds. We’ll periodically test his urine for telltale signs indicating the presence of kidney and bladder stones; they are painful! If your buddy has blood in his urine, can’t urinate, or is straining to urinate, it is a medical emergency. Call us immediately!

Reproductive Difficulties

Breeds with a large head and small pelvis are more prone to difficulties during the birthing process. Her pelvis is just too small to pass puppies and a C-section is often required for her health and that of her puppies. If you are interested in breeding your Chi, speak with us first. We can help you make an informed decision based on body conformation of both sire and dam.
Retained Puppy Teeth

Dogs normally begin to lose their primary (“puppy”) teeth at around 4 months of age. When the primary teeth don’t fall out as the adult teeth come in, infection or damage to the adult teeth may develop. Retained teeth are common in small breeds like Chihuahuas. The retained puppy teeth trap food and hair between the normal adult tooth and the primary tooth. Painful gums, bad breath and adult tooth loss can result if untreated. We’ll monitor his growing teeth and recommend removal of the puppy teeth if they are present alongside his adult teeth.
Neurologic Problems

Several neurologic diseases can afflict Longhaired Chihuahuas. Symptoms of neurological problems can include seizures, imbalance, tremors, weakness, or excess sleeping. If you notice any of these symptoms, please seek immediate veterinary care.

Low Blood Sugar

Hypoglycemia, also known as low blood sugar, is a common condition in young, small-breed dogs, including Longhaired Chihuahuas. It can be caused by many conditions. The physical signs include weakness, collapse, and seizures. These signs may occur after exercise, excitement, or after missing a meal. If your little one shows any of these signs, call us right away! Fortunately, once controlled at this young age, most out-grow this condition.

Allergies

In humans, an allergy to pollen, mold, or dust makes people sneeze and their eyes itch. In dogs, rather than sneeze, allergies make their skin itchy. We call this skin allergy “atopy”, and Chihuahuas often have it. Commonly, the feet, belly, folds of the skin, and ears are most affected. Symptoms typically start between the ages of one and three and can get worse every year. Licking the paws, rubbing the face, and frequent ear infections are the most common signs. The good news is that there are many treatment options available for this condition.

Spinal Cord Injuries

Longhaired Chihuahuas are more likely than other breeds to have instability in the first two neck vertebrae (called the atlantal and the axial vertebrae). This can cause a sudden spinal-cord injury in the neck. If your dog is suddenly unable or unwilling to jump up or go up stairs, cries for no apparent reason, or tries to turn or lower his head when you pick him up, he is in pain. Call us immediately! We’ll control the pain with medication, and sometimes surgery is recommended. As with so many other diseases, weight control helps to prevent it. With this breed, it’s important to use ramps or steps from the time your dog is a puppy so that he doesn’t spend a lifetime stressing his neck by jumping on and off of the furniture.
Mange

Demodex is a microscopic mite that lives in the hair follicles of dogs. All dogs have them. Normally a dog’s immune system keeps the mites in check, but some breeds, like your Chihuahua, develop an overabundance of these mites. In mild cases, pet owners may notice a few dry, irritated, hairless lesions. These often occur on the face or feet and may or may not be itchy. Secondary skin infections may occur. Prompt veterinary care is important to keep the disease from getting out of hand. Many pets seem to outgrow the problem, while others require lifelong management.

Water on the Brain

Hydrocephalus occurs when fluid builds up inside the skull and puts pressure on the brain. This condition is most common in breeds with dome-shaped heads, like your Longhaired Chihuahua. It is often present when the skull bones don’t fuse properly. Signs include seizures, difficulty training the puppy, dulled mental function, circling, and a spastic gait. It is usually diagnosed early in life, but occasionally we diagnose it in adult dogs. We’ll keep this risk in mind during her visits and recommend early testing and discuss effective treatment options if symptoms develop.
Taking Care of Your Longhaired Chihuahua at Home

Much of what you can do to keep your dog happy and healthy is common sense, just like it is for people. Watch her diet, make sure she gets plenty of exercise, regularly brush her teeth and coat, and call us or a pet emergency hospital when something seems unusual (see “What to Watch For” below). Be sure to adhere to the schedule of examinations and vaccinations that we recommend for her. This is when we’ll give her the necessary “check-ups” and test for diseases and conditions that are common in Chihuahuas. Another very important step in caring for your pet is signing up for pet health insurance. There will certainly be medical tests and procedures she will need throughout her life and pet health insurance will help you cover those costs.

Routine Care, Diet, and Exercise

Build her routine care into your schedule to help your Chi live longer, stay healthier, and be happier during her lifetime. We cannot overemphasize the importance of a proper diet and exercise routine.

Supervise your pet as you would a toddler. Keep doors closed, pick up after yourself, and block off rooms as necessary. This will keep her out of trouble and away from objects she shouldn’t put in her mouth.
Brush her coat as needed, at least weekly to prevent mats.
Longhaired Chihuahuas generally have good teeth, and you can keep them perfect by brushing them at least twice a week!
Clean her ears weekly, even as a puppy. Don’t worry—we’ll show you how!
Very sensitive to cold, so a warm winter wardrobe is necessary.
She is well suited for apartment living; she will need a daily walk and regular inside play.
Due to her assertive nature and small size, she is not recommended for homes with small children.
Keep your dog’s diet consistent and don’t give her people food.
Feed a high-quality diet appropriate for her age.
Exercise your dog regularly, but don’t overdo it at first.
What to Watch For

Any abnormal symptom could be a sign of serious disease, or it could just be a minor or temporary problem. The important thing is to be able to tell when to seek veterinary help, and how urgently. Many diseases cause dogs to have a characteristic combination of symptoms, which together can be a clear signal that your Longhaired Chihuahua needs help.

Office calls

Give us a call for an appointment if you notice any of these types of signs:

Change in appetite or water consumption
Tartar build-up, bad breath, red gums, or broken teeth
Itchy skin (scratching, chewing or licking), hair loss
Lethargy, mental dullness, or excessive sleeping
Fearfulness, aggression, or other behavioral changes
Emergencies

Seek medical care immediately if you notice any of these types of signs:

Scratching or shaking the head, tender ears, or ear discharge
Inability or straining to urinate; discolored urine
Cloudiness, redness, itching, or any other abnormality involving the eyes
Coughing, especially at night or upon rising after sleeping, rapid breathing at rest
Increasing hip pain at less than a year old
Bruises easily or bleeds a lot from a small wound
Slow or stunted growth; sometimes seizures after eating
Unwilling to jump, cries when moving head
Dry, scaly, sometimes itchy hairless patches on face or paws
Seizures, dull demeanor, spastic gait
Partners in Health Care

DNA testing is a rapidly advancing field with new tests constantly emerging to help in the diagnosis of inherited diseases before they can become a problem for your friend. For the most up-to-date information on DNA and other screening tests available for your pal, visit www.Genesis4Pets.com.

Your Chihuahua counts on you to take good care of her, and we look forward to working with you to ensure that she lives a long and healthy life. Our goal is to provide the best health care possible: health care that’s based on her breed, lifestyle, and age. Please contact us when you have questions or concerns.

References:

Ackerman L. The Genetic Connection: A Guide to Health Problems in Purebred Dogs. Second edition. AAHA Press; 2011.
Bell JS, Cavanagh KE, Tilley LP, Smith FW. Veterinary medical guide to dog and cat breeds. Jackson, Wyoming. Teton New Media; 2012.
Gough A, Thomas A. Breed Predispositions to Disease in Dogs and Cats. 2nd Edition. Wiley-Blackwell; 2010.
Crook A, Dawson S, Cote E, MacDonald S, Berry J. Canine Inherited Disorders Database [Internet]. University of Prince Edward Island. 2011. [cited 2013 Apr 11]. Available from: http:/ic.upei.ca/cidd/breed/chihuahua
Breed Specific Health Concerns [Internet]. American Kennel Club Canine Health Foundation, Inc. [cited 2013 Apr 11]. Available from: http:/www.akcchf.org/canine-health/breed-specific-concerns/?breed=chihuahua