Wolves live and hunt in groups called a pack. A pack can range from two wolves to as many as 20 wolves depending on such factors as habitat and food supply. Most packs have one breeding pair of wolves, called the alpha pair, who lead the hunt.

The only bird that can swim and not fly is a penguin.

In only 7.6 billion years, the sun will reach its maximum size and will shine 3,000 times brighter.

AMAZING FACTS