According to researchers, since 1900, at least 57 species and subspecies of North American freshwater fish have become extinct. This...

What is a Gila monster? They are a type of venomous lizard, that live in Nevada, Mexico, Utah, and California. Gila monsters are usually...

The three-toed or three-fingered sloths are the slowest mammals on our planet. However, they possess some unique characteristics that are...