A common but often unthought of problem when owning a pet monkey, is where it will sleep. In their natural habitat, they usually take to the trees during the night. One solution is to build a little platform on a tree nearby, and if the monkey is well trained it will sleep there and come back in the morning. However, if that is not an option you can set up a crib for the monkey. Make sure to cover it with something so the monkey does not escape though, because if that were to happen the monkey would most likely wreak havoc throughout the house.