Bruno is a deer chihuahua, he just turned 6 months old and he is great. I was afraid of getting a chihuahua at first because they are notorious for snapping at people and barking at everything that passes by or makes a noise. I am glad to say that Bruno is nothing like that. He is friendly with all other dogs and doesn't bite or nip at people or even children. He is not territorial, learns quickly and is very sociable. So glad I have him as a companion.