Cool..

Just remember there are all kinds of different one's.

Amazon Tree Boa
Emerald Tree Boa
and Green Tree Python

And they all have big teeth, but I think the biggest are the Emeralds. You can find pictures on the net. OUCH!
He just needs to be ready and know exackly what he is getting into!

And you are not suppose to handle any of them very much...
Beauty snakes though!

I think you can hold Tarantulas but I'm not sure... probably not too much I wouldnt think?!?!? Your probably right on that one!