Chihuahuas are not recommended in homes with children under eight. years simply because of the likelihood of injury by a small child. Regardless of the situation in your family, it is important to remember to interact with Chihuahuas with children, adults and other animals. Chihuahuas are distrustful of strangers, which makes them good watchdogs, but they need to learn how to be friendly with people. It is also important to remember that Chihuahuas tend to forget that they are small and will confront a larger aggressive dog; As a result, Chihuahuas need vigilant supervision in new situations when they walk and are in the yard.