AaRrHh!

This Frankenstein of cats was found on I Can Has Cheezburger

reowr!

The rest of the world may be happy and cute, but I shall stand up for my right to roar!

Image found on biboz.

grgrrgr

weeooorrrr

The sharpness of claws silently displayed on the branch are your second hint.

More cute animals to be found on the daily squee.

yech.

There are definitely days when I can sympathize with Bigfoot.

Drawn by Doug Savage, who's comics frequently make me laugh. They can be found here.

And ONLY Birds