Is a cat sitting next to the positive jump terminal
One of my coworkers pulls in an E36 325 that rolled in on a flatbed because the engine control unit got wet and was causing the car to run funny. He revs the engines a few times after pulling it into his stall to make it act up, which it wastes no time in doing. He opens the hood to pull out the ecu and is greeted by a a skinny little cat sitting in the back right corner of the engine compartment.
It sat there long enough to realize the hood was up then took a flying leap over the engine and hauled ass across the shop into the Mercedes side and lodged himself behind the tire rack
After a few minutes, our foreman finally got to the cat and yanked the little bastard out. Fortunately he was wearing thick leather gloves because i think his hands would have been skinned if he wasn't.
Moral of the story: BMW attracts all kinds of pussy
Seriously though, always be prepared to encounter some kind of animal under the hood of your car