Never heard of one? Go here.
You can buy them from the official site here.

I am obsessed with the little guys. I have just one, a baby treeson:

However, I have four baby treesons on the way--the original keychain one, the pink, the white with glasses, and the almond brown. I plan to get the birthday set next so I can have all the baby treesons and start collecting the big ones. I'm trying to save up to get my Blythe customized right now, but I just can't do it... I'm too obsessed with spending all my money on these dudes!

So, does anyone else here have or like Treesons?

I want treeson~~ I actually just saw them this week... me and my friend went to a vinyl toy shop, and there they were... so cute~  I really like these two - they are cheaper online... hmm...  I really wanted to buy them, but I just settled on something cheaper for now...  I bought these two at that store...

I have Treesons too, they are adorable