Arboreal species for a 4x2x2 enclosure

[Bogertophis]

I forgot to mention.... would prefer a snake that does well being handled often. I know ATB's are handleable, but I'd like something a bit more interactive. I already have a few ideas... but like to see what others say... sometimes we unintentionally overlook a particular species...

With this in mind, I'll toss in a name that isn't typically classified as arboreal, but which may fit your criteria, judging from the one I have. I'm not so sure about the 4' height, but my 4' long, solo 14 year old female certainly uses her 2' of tank height to frequently bask on her branches under a heat source*, & what's more, she handles beautifully without biting & happily eats f/t from tongs. She is VERY strong when handled & is therefore well-adapted to climbing branches. (*UTH is also provided & used occasionally, & btw, she is always fed while basking on her branches- that's how comfortable she is there.)

Nice iridescence is a bonus with Antaresia too. I'm talking about my Australian spotted python. I have taken her to lengthy public "meet-&-greets" that lasted hours- she was docile & like a pro with all the handling. She does like the warmth of human hands anyway, & she seems to be naturally curious- not shy. In a taller enclosure with branches, I can picture her using the space, along with maybe a "sky-hide" & a basket wired to branches for a platform, as I do for some other snakes I have.

You might also consider a nice American rat snake- such as an Everglades (beautiful orange-tend to be feisty, especially when young, but handles pretty well when raised from hatchling) or a Baird's rat snake (grey-silver with orange/yellow- generally very docile snakes- great for "public relations"). Either of these are likely to out-grow this 4 x 2 x 2 enclosure, but they'll take quite a while doing so. Just a thought- most rat snakes are very under-rated, IMO.