Depending on which part of Mexico you reside, you will have to deal with spider monkeys. They were a species once native to different parts of the country and have been reintroduced to the wild, in particular, along the Quintana Roo coast of Mexico.
Folks who live in the area, especially closer to the beaches, are sometimes visited by them in the trees. The monkeys , while entertaining for hotel guests, can pose a bit of a problem for local residents with their curiosity and quick tempers.
They have little fear of humans. They are more cautious than afraid, which is why they take no issue in checking out residential patios or teasing house pets such as dogs. However, once challenged to leave the property (by homeowner or pet), the monkeys are quick to temper and often begin jumping and hissing with fangs ready.
The Mexican spider monkey is a subspecies of Geoffroy’s spider monkey, a type of New World monkey,from Mexico and Central America, native to Mexico, Guatemala, Honduras, Nicaragua and El Salvador. It is described as being critically endangered by the IUCN, due to an 80% population decline in the last 45 years, mostly due to a large amount of habitat loss.