Brendan enjoying the smaller non-vertebrate members of the show.
Liam wondering what the heck this thing is!
Snakes, snakes, so many snakes!
Liam getting a better view than he's used to.
One of the many strikingly-colored chameleons. 
Brendan stared at this display silently for several seconds. I wonder what was going on in his mind?
So much to look at, so little patience for all of it!