Diablo is a savannah cat, which is a hybrid between a domestic cat and an African serval.
This cross-breeding is not only cruel to the animals involved but also produces confused offspring that can not figure out how to be a house pet.
Diablo is very unfriendly and has inherited every bit of a serval’s hissy personality. He is also food-aggressive and turns into a dangerous wildcat at feeding time.
Because his owners discarded him for being who he was, Diablo will live out the remainder of his life in a cage. While this is sad, at least he will be free to be the wild animal that he is.