There's a new video online of a dog playing and roughhousing with a cat. And when I say "cat," I mean a FULL-GROWN TIGER. According to the video post, they've been around each other since they were both nine weeks old, and now they're inseparable.And it's amazing, because the tiger acts like a half-dog, half-cat . . . and doesn't even do anything when the dog starts biting its ears.