This is Ben. Ben is a human. Humans are animals, just like Ben's pets. Let's learn about the words we use to compare animals with humans.
Some of the words we use to name animal body parts are the same as the ones we use for humans, BUT some are different...
In some ways Ben is the same as his cat, but different from his goldfish.
Ben has legs, like his cat. Ben does not have fins, like his goldfish.