I don't know if you can tell in the pic but his front feet are off the ground. He is barking at the cat. He does this thing where he balances on his back legs, and pounces his front ones up and down while giving the kitty grief.
And he said, "Purple, Shmurple!" Put my Camo on me darnit! I ain't no Sissy!
"If you aren't part of the solution, you're part of the problem."