Dog, Cat, and Mouse: All in one peace sign?

Here's something you usually don't see. A mouse on top of a cat sitting on top of a dog. How did he do that??? I've raised kittens before and there's an instinct to kill.

All was fine until oil was discovered under the cat.

Here's a comment left by someone on youtube:
"it's such a shame, with our superior intellegence we as a whole refuse to use it for the good in life. people are naturally aggressive and selfish" -- SVTCO

[Youtube] Dog, Cat, and Mouse getting along just fine