Unlike some other monkey species, the group does not split into separate foraging groups during the day.
In the last few years many new categories have opened up, such as the selling of the rights to name a new monkey species for $650,000.
Animal species include bear, barking deer and various monkey species.
Other monkey species in captivity quickly learn to wash off their food.
Most howler monkey species live in groups of six to 15 animals, with one to three adult males and multiple females.
Critics said the term was a racial pejorative derived from the name of a monkey species.
It is one of the monkey species most often seen and heard in the wild in Central America.
Four monkey species are known from the Greater Antilles, all extinct.
A few male squirrel monkeys have been observed interacting with groups of other monkey species.
It has monkey species that have learned to coexist 'peacefully' with the natives there.