Yeah, like that! Before I ate the Human Human Fruit, I was just a regular reindeer. That's what a Zoan fruit does - each one has its own species, and it lets the user transform into different forms!

There's other kinds of Devil Fruits too, though. A Paramecia fuit user can manipulate his or her body in all sorts of ways, and a Logia users can change their entire bodies into an element whenever they want!