Chihuahuas can require lots of veterinary assistance, particularly in birthing and dental care. Some Chihuahuas can have moleras (a soft spot on their skulls), but this is not a birth defect, and will fill in with age. However, care and attention must be taken with Chihuahuas in the first six months of their life until the skull is fully formed.
Dental care is also extremely important for Chihuahuas because of their smaller size, and their jaw size makes for weaker teeth. A combination of daily brushing, dental chews is an effective way for owners to help prevent the accumulation of plaque and tartar to avoid consequences of dental diseases.
Like many other toy breeds, they are susceptible to injuries from falling, and vulnerable to attacks from larger dogs and other animals. This makes them a great indoor pet in an urban environment.
This breed can be notoriously difficult to housebreak. Chihuahuas require plenty of patience – they are extremely loyal to their owners, and owners may find that their Chihuahuas do not fare well with younger children. Like all dogs, they can benefit from high-quality socialization.