Krypto

          Krypto is Superman's pet dog, the dog is also known as Krypto the Superdog. Krypto made his first showing with Superman in the Adventure Comics. The writers never specified his breed, but from what you see in the comics he is a white dog with a pedigree.
POWERS AND ABILITIES 
          Krypto possesses the abilities of a Kryptonian. The dogs physical capiblities are dulled, with its smaller size. His sense of smell and hearing are more canny then those of the human Kryptonian. Krypto's intelligence is equal to humans, but he still has dog traits.
He also has:

• Super stamina, strength and speed 
• Flight 
• X-ray vision and heat vision 
• Super hearing 
• Physical invulnerability  

TEAM AFFILIATIONS 

• Team Superman 
• Space Canine Patrol Agents 
• Legion of Super-Pets