Monkeys drop dead from trees due to heatwave in Mexico

Howler monkeys have been dropping dead from trees in Mexico's southeastern tropical forests amid a nationwide drought and heatwaves. Mantled howler monkey is classified as vulnerable on the International Union for Conservation of Nature (IUCN) Red List. Mexico environment ministry attributed monkeys' deaths to "heat stroke, dehydration, malnutrition or spraying of crops with toxic agro-chemicals".