Of all of the more than 35,000 species of fish, the great white shark is widely considered to be the deadliest. While sharks are certainly fearsome, some smaller fish are even more lethal. Some fish ...

A scary-looking creature with “devil” in its name was spotted close to the surface off Tenerife, a Spanish island.

The average size of an adult western diamondback rattlesnake is between 4 and 6 feet. Heftier snakes can weigh nearly 15 pounds, but the average weight is three to six pounds.

Often dismissed as pests, rats have long been misunderstood. But the African giant pouched rat (Cricetomys gambianus), the world’s longest, is challenging that perception. With its intelligence and ...