I used to have the croc on my hunter (and ended up getting rid of her, though for what reason I don't know- I may end up having her restored.) However, I can't remember her name for the life of me! All of my pets have a theme of having african names, so I tried looking hers up, and while I still can't find anything to match, I did find a few other interesting ones.
Anyang - This one means crocodile, a pretty obvious name choice since its... well, a croc!

Katlego - With a boiling stare. Those eyes -are- pretty red and fiery.
Marjani - Red coral. They're water creatures, and I think the belly of that croc is pretty reddish.
Masozi - Meaning 'tears'. Crocs bring tears to the eyes of all your PvP foes!
Sauda - Dark-skinned. My worm is named this actually, but I figure it would fit for this croc.
Subira - Patience. Crocodiles are pretty patient creatures, plus you had to have a lot of patience for what you went through to get this one!