The world’s tropical forests house a spectacular array of frogs. In fact, although found almost everywhere on Earth, frogs are at their most diverse in tropical regions—places like the Amazon rainforest and the forests of Equatorial Africa. The following are seven amazing types of frogs found exclusively in those environments,...

For more than 12,000 years it has lived with humans as a hunting companion, protector, object of scorn or adoration, and friend. The dog evolved from the gray wolf into more than 400 distinct breeds. Human beings have played a major role in creating dogs that fulfill distinct societal needs. Dogs are regarded differently in different parts...