We’ve all heard of dog and horse shows, but did you know you can also show pet rats? That’s right, these friendly, adorable ...

Standard rat: It's a loving pet that's brown, and its tail is as long as its body. Rex rat (or sheep rat): Their hair has a wooly feel, but it grows thin as they age.

Remember: they’re fancy rats. “They are a common type of pet rat,” Holm explained. “They are much tamer than those in the wild.