Swinging around is a lot of fun and talking with the animals is pretty funny. I think there should be something on the branches (like bunches of fruits) to encourage you to climb up. Couldn't find the Alligator the fish was talking about, so maybe adding some Points of Interest (like a leaning tree or a really small/big tree compared to the others) would have really helped keep track of the animals to trade with.

I loved twipping around as elastimonkey a lot, but I didn't end up doing any trading because I couldn't get out of any menus. The esc button did it sometimes, but it would also exit full screen and let go of the mouse. Funny writing, though!

The branch swinging was super fun! I only wish that there were some treats and Easter eggs to be found up in the branches :)