Model for 3d printFiles: STL, ZTL, OBJPluto is Mickey Mouse's pet dog that first appeared as a nameless bloodhound in 1930's The Chain Gang. Named by Walt Disney,[1] Pluto is unique for a character in Mickey's world, in that he is not anthropomorphic beyond showing a broad range of facial expressions; he is actually represented as a normal dog, lacking speech and the ability to walk upright.