The Flat-Headed Cat

My animal is the Flat-Headed Cat. The Flat-Headed Cat currently prefers to swim, rather than walk, but since the world will get hotter, and some water would evaporate, Flat-Headed Cats would not be able to swim as much, so they will grow sharp claws to climb high cliffs to hunt food. They also have poisonous fur, so if a predator tries to grab it, they would be poisoned. Flat-Headed Cats would have night vision, so they could eat nocturnal animals for food. They would only need to sleep for 2 hours for that reason. Flat-Headed Cats would be very limber, so they could get from place to place quickly. Flat-Headed Cats would have color changing fur, similar colors to a sunrise/sunset to help sneak up on prey.