oh my goodness...please tell me he is just biting his tail!

wow! great capture :)

Exceptional "snappy" image! :-)

Quite and amazing and timely capture. They are predatory and will kill their own. Especially now is mating season.
If you have more info about the scene, please share.

cute, and nice detail. the lighting was nice, but the reflection in his eyes was a bit distracting, try editing that on photoshop.