Brutal heat wave is killing howler monkeys in Mexico

Brutal heat wave is killing howler monkeys in Mexico

Normally quite intimidating, howler monkeys are muscular and can be around 2 feet (60 centimeters) tall, with tails as long again. They are equipped with big jaws and a fearsome set of teeth and fangs. But mostly, their lion-like roars, which bely their size, are what they're known for.