The United States has one of the highest pet populations in the world, about 56 percent of American households report sharing their home with a furry friend, meaning a dog or cat.
Belize's Giant Blue Hole is known as the largest sea hole on the planet, and is very popular with divers and snorkelers. At 1,000 feet across, it is about as deep as a 37-story building is tall!
Mexico's Cave of Crystals contains some of the world's largest known natural crystals. They measure as long as 37.4 feet and that's almost as long as a school bus!!!
Found throughout most of Canada and the U.S., the northern short-tailed shrew is North America's only native venomous mammal. The tiny animal uses its venom to paralyze prey. It's only the size of a mouse!!