Coworkers can be the thing that makes or breaks a job for you. If you have great coworkers, they can improve your working life, helping you get through anything terrible in your job. But if you have bad coworkers, they can be the thing that makes your job terrible, especially since you’re often stuck with them for hours at a time in the same room, or left picking up their slack. We’ve gathered stories from around the Internet of crazy coworkers and the things that they did that left people staring in shocked disbelief. Check out our list and see if any of them are crazier than your worst coworker.

#1: The Birds and the Bees and the Guinea Pigs
Working at a pet store would be a uniquely challenging job. Think about it: if you work at a hardware store, the wrenches aren’t going to die if you forget to feed them. If you work at a clothing store, the denim jackets aren’t going to get into trouble when you take your eyes off them.

But the merchandise at a pet store is living, breathing animals; if you don’t take good care of them, they die, and if you leave the males and females alone together… well, that’s a whole different problem. As this pet store employee found out, there’s a very good reason to keep the males and females separated.