Biologist at the University of Costa Rica Oscar M. Chaves Badilla is a primate specialist studying a phenomenon that seems to appear almost exclusively...
7 Latin American primate species, which inhabit Argentina, Brazil, Ecuador, Peru and one that extends from Mexico to Colombia, are among the most endangered...
Howler monkeys may be among the most interesting animals to spot in Costa Rica. And they're not all that difficult to find — you just need to use your ears.
Drought, disease or something more sinister has caused a massive die-off of howler monkeys in Nicaragua, Costa Rica and other Latin American countries.
For male howler monkeys on the search for a mate, size matters; but being a well-endowed monkey comes at a price. The results of a new study show that in some species of howler monkeys the larger a monkey’s testicles are, the smaller its voice.
