Well, some are actually aliens in cat costumes scouting our planet for invasion. I've had two. You can always tell the alien ones, they spend time sitting in front of electrical outlets, psychically communicating through our power grid with the big giant cat head's ship, looks like a flying saucer full of milk, parked on the dark side of the moon.(cue music, Pink Floyd, Them & Us)
They will also talk to flies to communicate with their other kind in the neighborhood. Kill the flies, they're cat/alien messengers!