Tree Kangaroos ?

 

"But I only see two of them !"

No, I mean that I think that these are Dendrolagus, a.k.a. Tree Kangaroos.

They inhabit the tropical rainforests of New Guinea and far northeastern Queensland, along with some of the islands in the region. Most tree-kangaroos are considered threatened due to hunting and habitat destruction. They are the only true arboreal macropods.

Bonus - 

Yay. IASIP is back.