Chihuahua Common Problems

Even well-bred, well-trained Chihuahuas run into recurring problems. Knowing which ones are likely — and how to address them — saves owners months of frustration.

Behavior Problems

The most common behavior issues in the Chihuahua include excessive barking, destructive chewing during adolescence, leash pulling, and either separation anxiety or stranger reactivity (depending on the dog). Most trace back to: under-exercise, under-stimulation, or inconsistent rules.

Pulling on Leash

A Chihuahua that pulls is usually getting too little aerobic exercise. Increase activity, switch to a front-clip harness, and practice ‘stop-when-tight’ on every walk for 2 weeks.

Destructive Chewing

Most common between 4–18 months. Provide appropriate chew toys, crate when unsupervised, and exercise more — a tired puppy doesn’t shred couches.

Health Problems

Top health issues for the Chihuahua: patellar luxation, mitral valve disease (heart), hydrocephalus. Schedule annual vet exams, maintain ideal weight, and ask about breed-specific screening tests.

Grooming Issues

Mats, hot spots, ear infections, and dental disease are the most common grooming-related problems. All four are prevented by consistent home grooming and not over-bathing.

Training Plateaus

It’s normal to hit a wall around 6–12 months. Moderate — intelligent but strong-willed; small dog syndrome is common without firm training. Push through with shorter, more frequent sessions and higher-value rewards.

When to Get Professional Help

For any aggression, severe anxiety, or compulsive behaviors, hire a certified behaviorist (CAAB or veterinary behaviorist). Don’t trust general ‘dog trainers’ for serious cases.