The Chihuahua breed is a popular choice if you ... which is great news if you're looking for one of the best dog breeds for companionship. Contrary to many stereotypes this is not an aggressive ...

The Chihuahua breed is a popular choice if you're looking for a toy-size breed. While they might be small in size, they are big in personality and aren't afraid to let you know just how they feel.

Even the most innocent play can escalate quickly, much like it did for these adorable dogs.Take a look at this video from ...

Dog brain size relates to breed-specific behaviors, showing toy breeds with larger brain-to-body ratios than working breeds.