Snow leopards are usually solitary. Here's how they drop messages to potential mates.

For a few fleeting weeks each winter, the famously elusive cats emerge from solitude, calling across the mountains in search of a mate.

This Spider’s ‘Pearl Necklace’ Looks Fancy—Until You Learn What It Really Is

Researchers collected the unfortunate arachnids near grottos and caves in Rio de Janeiro state, a region similar to where ...