What are predators of a pocket monkey?

There's no such thing as a "pocket monkey". It sounds like you might be thinking of a marmoset, a small New World monkey.

Marmosets are preyed upon by a variety of animals, including:

* Birds of prey: Hawks, owls, eagles

* Snakes: Boas, anacondas, other large snakes

* Larger mammals: Jaguars, pumas, ocelots, and other large cats

* Other primates: Larger monkeys can sometimes prey on marmosets

* Small mammals: Coatis, foxes, and weasels

The specific predators vary depending on the species of marmoset and the geographic location.