Normally cats purr when they’re being petted or just draped across a lap, sleeping the day away in the comfort of a human. Yet cats can also purr in the presence of other cats but sometimes they’ll even purr when completely alone.

Strangely, cats often purr when in pain. Veterinarians believe hurt cats purr as a way to trick others into thinking the cat is just fine so they won’t try to attack or hurt it. curiously, only house cats seem to be able to purr. Lions and other big cats cannot purr, which proves that house cats are the superior king of the jungle after all.

To read more about why cats purr, click here.