Cats and Dogs

After the Great Experiments in 2020s, 'pure' humans were driven almost to the point of extinction, leaving various subspecies of human-animal hybrids to flourish.
Scarred by a horrific past, and nursing a deep hatred of the dog-hybrids Cameron is reluctant to let Luke get close to him.
But Luke is kind, and persistent, and Cameron finds himself being drawn towards Luke as time passes, despite his misgivings about the dog-hybrids.
Cam is a sarcastic, angry cat.
Luke is a loving, easy-going dog.
How can two species, which have traditionally been enemies for hundreds of years, come together and live in peace, when circumstances dictate they must?