As your pet.

If you want a reptile from an early level there are raptors, and crocoliscs. My hunter's main pet was his tiger, but I also had a bear and a raptor. Raptors look like the velociraptors in Jurasic Park.

I just got my open beta key for Warhammer. Downloading the patch right now. I'll let you all know what the game is like if you want.