Watch these elaborate animal courtship rituals performed by humans

Gray whales swim through kelp in this zen-inducing video

11 amazing antics of ants

Orphaned puppy finds new family with cats

As U.N. makes history on Earth Day, Leonardo DiCaprio reminds us not to rest on laurels

Leopard cub demonstrates proper catnap technique

Dolphin's birth brings cheers at Shedd Aquarium

Short documentary delves into Alzheimer's disease

Brighten up breakfast with rainbow waffles

Mesmerizing short film 'Wrapped' imagines NYC overtaken by plants

This vineyard puts 800 happy ducks to work every day

Flying dirt no match for dog's desire to nap