I was going to use Barbaric Yawp since he's already a Xotl but the name doesn't really match. Crikey is already taken :P

I read that as Stevie (wonder) Irwin

that is my suggestion. :P

My first thought was (also) to name the pet, literally Steve Irwin. It would be such a lovely tribute. I see that CrocodileHunter is already taken, that would have been the obvious. I would want it to be quite obvious. I guess researching his life for other buzz words might work. Good luck!!