The document discusses the narrator's three favorite animals: dolphins, leopards, and cats. Dolphins are gray whales that live in oceans, have long tails and noses, and swim and hunt fish well. Leopards are yellow big cats with black spots found in Africa that have sharp teeth and hunt prey in tall grass. Cats are domestic pets with claws and eyes that eat meat, fish, and milk, and can run and jump. The narrator's pet cat Barsik is gray and they teach it tricks and consider it a good friend.