Cats love cozying up in small spaces. Cats can also be furry little jerks. So, it's safe to assume that when a cat decides to sleep in the (much larger) bed of a dog sibling, it's done purely to screw with the dog.
Sadly, dogs are too polite for confrontation and resort to halfhearted pleas with their feline occupier. On the other hand, it appears as if the cats couldn't care less.
Watch our video above to see exactly what we mean. And, if you happen to live with one of these notorious criminals, there is a subreddit dedicated to exposing the stealing of dog beds everywhere.