What is the name of Mickey Mouse's pet dog?

Pluto is Mickey Mouse's pet dog. Unlike Goofy, he is not an anthropomorphic dog. He is the only member of The Sensational Six that behaves like a "real" animal. Pluto, also called Pluto the Pup, was created in 1930 by Walt Disney Productions. He is a golden-colored, medium-sized, short-haired dog with black ears. Officially a mixed-breed dog, however, he made his debut as a bloodhound in the Mickey Mouse cartoon The Chain Gang.

Source: Mickey and Friends Wiki