As in previous ages the Australian marsupials of the Posthomic have developed forms that are superficially very similar to those of placental mammals existing in similar environments in other parts of the world. A prime example of this is the chuckaboo, essentially a marsupial monkey with grasping arms and legs, opposable digits and a prehensile tail. Its bodily form, similar to many of the true monkeys in Africa and Asia of the world, is well suited to life in the trees.
The chuckaboo is a communal tree-dweller.
The female has two pouches, one on either side of her abdomen, so that her young do not get in the way when she is climbing.