The Vet’s Guide to Chihuahuas: Facts, Care, and Lifestyle Tips

Chihuahuas are the world’s smallest dog breed—but don’t let their size fool you. Known for their bold personalities and loyal nature, they’re a popular choice for pet parents across Australia.

In 2024, Chihuahuas remain one of the country’s top 10 most owned breeds, according to Royal Canin Australia.

Originally from Mexico, these compact companions are known for their expressive eyes, spirited charm, and adaptability. Whether you live in a city apartment or a family home, Chihuahuas tend to fit right in. Their big hearts—and even bigger personalities—make them unforgettable additions to any household.

Grooming a Chihuahua is relatively straightforward, but it still requires regular attention to keep their coat, skin, and overall health in top condition. Whether your Chihuahua has a smooth or long coat, maintaining proper grooming habits will ensure they stay clean, comfortable, and free of common problems like matting or skin irritation.

Grooming Requirements

Chihuahuas with smooth coats require minimal brushing, about once a week, to remove loose hairs and keep their coat shiny. Long-haired Chihuahuas need more frequent brushing, ideally two to three times a week, to prevent tangles and mats from forming. A soft-bristled brush or a comb designed for small dogs is ideal for both coat types. Regular brushing also helps distribute the skin's natural oils, promoting a healthy, glossy coat.

Bathing

Chihuahuas do not require frequent baths; bathing them once every 4 to 6 weeks is typically enough unless they get particularly dirty. Use a mild, dog-specific shampoo to avoid drying out their skin, which can be sensitive. After bathing, dry them thoroughly, especially if your Chihuahua has a long coat, as damp fur can lead to skin irritations.

Skin Care

Chihuahuas have delicate skin, and because of their small size, they are more prone to developing dry skin or allergies. Using moisturising shampoos and conditioners can help prevent dryness. Monitor their skin for signs of irritation, such as redness, flakiness, or excessive scratching. If these occur, consult your veterinarian for advice on suitable treatments or dietary adjustments to improve their skin health.

Dental Care

Dental hygiene is especially important for Chihuahuas, as their small mouths are more prone to overcrowding and plaque buildup. Without proper care, they can develop dental issues like gum disease and tooth decay. Brushing their teeth two to three times a week with a vet-approved toothpaste is essential. Regular dental check-ups with your vet, along with offering dog dental chews or dog toys, can further help maintain good oral health.

Clean Ears

Due to their upright, large ears, Chihuahuas are less likely to experience ear infections compared to floppy-eared breeds. However, their ears should still be checked regularly for wax buildup or signs of irritation. Clean their ears gently with a vet-recommended ear cleaner and a soft cotton pad. Avoid inserting anything into the ear canal, as this can cause injury or discomfort.

Nail Trimming

Chihuahuas' small size means their nails don’t naturally wear down as quickly as larger dogs, so they regular trimming. Their nails should be clipped every 3 to 4 weeks or as soon as you hear them clicking on the floor. Use a dog-specific nail trimmer, and be cautious not to cut into the quick, which can cause bleeding and discomfort. Keeping their nails short prevents painful overgrowth and keeps their paws healthy.

While Chihuahuas are generally healthy, they are prone to certain health problems due to their genetics and small size. Understanding these potential issues can help you monitor your Chihuahua’s well-being and seek veterinary care when necessary.

Patellar Luxation

Patellar luxation is a common condition in small dog breeds like Chihuahuas, where the kneecap slips out of its normal position. This can cause pain and difficulty walking, especially if the condition becomes severe. Signs include limping or skipping steps during walks. In mild cases, treatment may involve physical therapy, but in severe cases could require surgery to correct the problem.

Hypoglycemia

Chihuahuas are particularly susceptible to hypoglycemia or low blood sugar, especially as puppies. Symptoms of hypoglycemia include weakness, lethargy, shaking, and even seizures. It’s essential to provide frequent, small meals to prevent sudden drops in blood sugar and always have a vet's guidance on managing this condition.

Heart Disease

As they age, heart disease, particularly mitral valve disease, is a health concern for Chihuahuas. This condition involves the deterioration of the heart valve, leading to improper blood flow and potential heart failure if untreated. Symptoms include coughing, difficulty breathing, and lethargy. Regular vet check-ups and early detection are key in managing heart conditions effectively.

Dental Disease

Dental issues are common in Chihuahuas due to their small mouths, which often lead to overcrowding of teeth. If left untreated, this can result in plaque buildup, gingivitis, and eventually tooth loss. Daily tooth brushing, routine dental cleanings, and offering dental-friendly chews are crucial for preventing dental disease.

Tracheal Collapse

Chihuahuas may be predisposed to tracheal collapse, a condition in which the cartilage rings in their windpipe weaken, making breathing difficult. Symptoms include persistent coughing, especially when excited or after exercise. Managing tracheal collapse often involves weight control, using a harness instead of a collar, and medication to reduce coughing and inflammation.

Hydrocephalus

Some Chihuahuas are born with hydrocephalus, a condition where fluid builds up in the brain, leading to neurological issues such as seizures, head tilting, and vision problems. While hydrocephalus can be diagnosed early through veterinary exams, treatment options vary, and in some cases, surgical intervention may be necessary to manage the condition.

By staying aware of these health risks and providing your Chihuahua with regular veterinary care, a healthy diet, and a well-rounded lifestyle, you can help them avoid or manage many of these common issues, ensuring they live a happy and comfortable life.

Training a Chihuahua is an enjoyable process, given their intelligence and eagerness to please. While they can be independent, Chihuahuas respond well to training with patience, consistency, and positive reinforcement.

Positive Reinforcement

Chihuahuas excel with positive reinforcement. Using treats, praise, and affection as rewards for good behaviour helps them quickly learn commands like "sit," "stay," and "come." Offering immediate rewards encourages obedience and strengthens the bond between you and your dog. Their short attention spans mean quick rewards are essential for effective training.

Consistency and Patience 

Consistency is key when training Chihuahuas. Use the same commands and gestures, and ensure all family members follow the same approach. While they can be stubborn, they respond best to patience. Keep sessions brief (about 5 to 10 minutes) to maintain their interest without overwhelming them. Frequent, short sessions are the best way to keep them engaged.

Utilise Their Intelligence

Chihuahuas are smart dogs who enjoy mental challenges. Incorporating dog puzzle toys, interactive games, and trick training helps engage their minds and prevent boredom. Teaching fun tricks like "spin" or "rollover" is a great way to tap into their intelligence while building a strong bond.

Keeping your Chihuahua active is essential for both their physical and mental well-being. Despite their small size, Chihuahuas have plenty of energy and enjoy various activities that stimulate their minds and bodies.

Playing Fetch

Chihuahuas may be tiny, but they love a good game of fetch. Use small, lightweight dog toys that are easy for them to carry. Indoor fetch is a great option, especially if you live in an apartment or on rainy days. This game not only gives them a chance to exercise but also taps into their natural playfulness and keeps them engaged.

Interactive Toys

Interactive and enrichment dog toys are excellent for Chihuahuas, as they help challenge their minds and prevent boredom. Dog puzzle toys that dispense treats or small plush toys they can toss around are perfect for keeping them occupied. Rotating toys regularly keeps their interest piqued and adds variety to their daily routine.

Walks and Exploration

Short walks are great for providing exercise and stimulation for your Chihuahua. While they don't need long hikes, daily walks around the neighbourhood allow them to explore their surroundings and get the physical activity they need. Opt for a small dog harness when taking them out for walks. Chihuahuas can be sensitive to the cold and heat, so try to keep them out of extreme temperatures.

While Chihuahuas are loving and loyal companions, they can sometimes exhibit behavioural issues if not properly trained or socialised. Understanding these tendencies can help you address them early and ensure a well-balanced pet.

Separation Anxiety

Chihuahuas are deeply attached to their owners, and as a result, they can suffer from separation anxiety. When left alone for long periods, they may bark excessively, become destructive, or show signs of stress. To minimise anxiety, establish a routine, provide interactive toys to keep them busy, and gradually teach them to be comfortable when you're not home.

Barking

Chihuahuas are known for being vocal, often barking at strangers, other dogs, or unfamiliar sounds. While their protective nature is a positive trait, excessive barking can become a problem. Training them to respond to a "quiet" command and using positive reinforcement when they stay calm can help manage this behaviour.

Aggression Toward Other Dogs

Due to their strong personalities, Chihuahuas may exhibit aggression toward other dogs, especially larger breeds. Early socialisation is crucial to teach them how to interact calmly with other pets. Gradual exposure to different dogs in controlled environments can reduce fear and help them become more confident around others.

Providing your Chihuahua with a well-balanced diet is crucial for maintaining their health and energy levels. Due to their small size and fast metabolism, Chihuahuas need high-quality, nutrient-dense food to support their active lifestyle and prevent health issues.

General Nutrition Needs

Chihuahuas thrive on a diet rich in high-quality protein, healthy fats, and essential vitamins and minerals. Look for dog foods that list a named protein source, such as chicken or beef, as the first ingredient. As Chihuahuas are prone to dental issues, incorporating both dry kibble to help clean their teeth and wet food for hydration can be beneficial. Be mindful of portion sizes to prevent overeating, as even a small amount of extra food can lead to obesity in such a tiny breed.

Puppy Nutrition

Chihuahua puppies have unique nutritional needs as they grow rapidly and are prone to hypoglycemia (low blood sugar). Feeding a high-calorie, protein-rich puppy food that’s specifically formulated for small breeds ensures they get the nutrients they need. Chihuahuas should be fed small, frequent meals about three to four times daily to keep their blood sugar levels stable. Always provide plenty of fresh water, as dehydration can be an issue for young, active puppies.

Specific Nutritional Needs

Adult and senior Chihuahuas may benefit from diets tailored to their specific health concerns. Foods rich in omega-3 and omega-6 fatty acids can support their skin and coat health, while formulas with glucosamine and chondroitin help maintain healthy joints, which can be a concern for aging Chihuahuas. Additionally, given their predisposition to dental disease, offering dental chews and feeding a combination of dry kibble helps promote oral health. If your Chihuahua has any specific health conditions, consult your veterinarian to adjust their diet accordingly.

Whether you're a proud Chihuahua owner or considering adding one to your family, we hope this guide has offered valuable insights into their care and temperament. While this is a great starting point, always seek new knowledge from reliable sources to ensure the best care. Connecting with other Chihuahua owners, exchanging experiences, and continuing to learn about their unique needs will deepen your understanding of this remarkable breed. With proper care, training, and affection, your Chihuahua will be a loyal and loving companion for many happy years.

This article was written by Dr. Jack Ayerbe