Here's an update on Fester. I've had him exactly one month and he's eaten 5 pinky rats so far. Some of you mentioned he was a bit skinny when I got him, so I will be getting the next size of rat when I get more. Hopefully he looks bigger (less skinny) now.
PS - He thinks he's arboreal. :p He had a ball (no pun intended) hanging out in my Hibiscus tree.