Once robust, populations of cougars (also known as mountain lions or pumas) have declined drastically across most of their range in the Americas. The population decline is due to the impact of extensive hunting and predator control, in addition to continued habitat loss and fragmentation. Cougars...

Snakes instill a deep-rooted fear in many people that few other animals can match. Even other animals seem to put them in a special category; many wild animals recognize snakes as threatening, and some birds and monkeys even have special vocalizations for sounding an alarm when a snake is seen. But...

They slip soundlessly through our landscapes, cloaked in a rainbow of colors and patterns that help them become one with bark, rocks, leaves and soil. Often the only sign of their existence is what they leave behind: ghostly shed skins imprinted with shapes of eyes and scales, traces of pigmentation...