Did you know that a rhinoceros horn is made out of keratin, the same protein that makes up our finger and toenails? I do, because I, along with my daughter Nyxie, looked up a bunch of random animal facts to make this book. Here?s a couple more: Just one bat can eat up to 500 bugs in one night. That?s like you sitting down and eating 15 pizzas in one night! A horse?s ears will often point in the direction they?re looking. If a horse?s ears are pointed in two different directions, they?re looking at two different things.