Apparently cats can be quite selfless when they want to be.
This classic video, which recently resurfaced, shows a cat trying to help a little white pup sneak out through a small hole in a wall. At first, the dog desperately tries to push himself through the hole, but seems either too afraid or too big to get through.
But the cat's having none of it. She slips through the hole herself, and a few seconds later the dog pops out, apparently encouraged by his feline friend's example.
It's unclear whether the dog was actually trapped in the wall, or whether he was just trying to sneak out through a door for a jaunt about town - but in either case, this cat is a very helpful friend. Watch the video below and judge for yourself.