the animal is X
X is a zebra if X has stripes and X has hooves
X is a tiger if X has stripes and X has claws
X is a dog if mammal describes X and X can bark
X is a cat if mammal describes X and X can mieow
mammal describes X if X has hair or X has milk
X is a bird if X has feathers
X is a bird if X can fly and X has eggs
X is a fish if X can swim and X has fins