Can your pet open doors?

This is a little different, but I have a chinchilla that has been known to open his cage door. I found this out a few years ago when I had someone pet sitting for me. He said that he had to catch Honeyboy a couple of times and return him to his cage. I thought at first that maybe my pet sitter didn't latch the door completely. Then I saw for myself how this sneaky rodent shook the door until it unlatched. Since then, I have added clip locks to his cage door. He hasn't figured those out (yet).