This looks like an AWESOME series; I wish I'd thought of this! I'll be sure to fav and comment on every page.
Jack looks cool, hopefully he won't be as AWFUL as Chris Maclean. Lion's are said to be the kings of the jungle, so it makes sense a lion would be the host.
So, since there are nine campers already submitted, here's my guesses for what species the remaining 15 will be:-
Seahorse (if it's a pregnant male I'd possible die of laughter!)
This series is gonna be AWESOME!