Merganser duck mothers escort their young to the best feeding spots, but it's much easier to hitch a ride on mom than to try ...

The continent across the Atlantic Ocean, where wildlife thrives among the varied landscapes: North America is the focus ... as fast at 40 mph (64 kmh). Both animals are found in the same desert ...

These charismatic, rabbit-size rodents live on North America's prairies and open grasslands ... They also feature listening posts near exits, so animals can safely keep tabs on the movements ...