Amazing animals — A look at the weird and wonderful species that live on our planet

Sand strikers — also known as bobbit worms — reach up to 10 feet long. They have razor-sharp jaws they use to catch unsuspecting fish and can split into bits to regenerate.

Clouded leopards can rotate their ankle joints by almost 180 degrees and they kill prey by biting the back of their necks with their huge teeth.

Ocean pout live in frigid waters from Labrador in Canada to North Carolina and have evolved a blood protein that serves as antifreeze.

Hercules beetles can grow to almost 7 inches long and are among the largest flying insects on Earth.

Arabian sand boas live in deserts on the Arabian Peninsula, where they lie buried in the sand with only their derpy eyes peeking out as they wait for prey.

Rather than throw its old head cases away, the gum leaf skeletonizer wears them like a hat to protect itself from predators.

Researchers are only beginning to understand the cryptic lives of the earless monitor lizards of Borneo.

Darwin and fellow naturalist Alfred Russel Wallace predicted the existence of Wallace's sphinx moth from an orchid with an extremely long nectar tube.

These weird-looking stocky mammals roam Alpine zones and forested valleys in Asia, using their specially adapted split hooves help them traverse the steep, rocky terrain.

This frilly slug lives in the mangroves of southeastern Asia and Australia, lounging in shallow pools of water and scraping up algae from which it gains the ability to photosynthesize.