There are some animals with names so horrifying that ... The Gila Monster is the most vicious-looking lizard in North America, with an elongated body and a dragon-like head. Although it has ...

Here are eight of the scariest prehistoric creatures ... Between 2.5 million and 10,000 years ago, Smilodons wandered North and South America. The animals that better resembled hyenas rather ...

There are over 150 different species of firefly in North America, and each has its own characteristic flash code. Male fireflies use their glow to attract females and, in some areas at certain ...