Which specialized features found on their paws and feet help tree-kangaroos secure purchase on bark?

Answer

Longer, more curved nails and sponge-like pads

To gain purchase on bark, tree-kangaroos have evolved longer, more curved nails compared to ground kangaroos, and their paws/soles are equipped with sponge-like pads for enhanced grip.

Which specialized features found on their paws and feet help tree-kangaroos secure purchase on bark?
animalmammalmarsupialmacropodtree kangaroo