Ever met a crow with a death wish? You're about to see one, courtesy of YouTube Petsami.
We must say the cheeky chap is sailing very close to the wind (as it were) as he tiptoes up to a totally-unawares pooch and nips him on the tail. We don't think we've ever seen a dog look so startled. Or jump so high, come to think of it.
As an aside, that's quite a snazzy jumper the dog's wearing, too, isn't it? Looking good, Rover!
Now, take a look at 13 more of the internet's most confused dogs...