Kryptonian Dogs are a non-sapient (possibly semi-sapient), domesticated species native to the now-destroyed planet Krypton. Their external appearance is identical to an Earth dog, and they display the same powers and abilities of Kryptonians when exposed to the energy of Earth's sun. Krypto was a Well known/Famous male kryptonian dog. Also known he Sometimes help Superman in his missions (The ones he capable of help) and also his pet companion.