Male kangaroos flex their biceps and wrestle other males to attract female kangaroos.

The Japanese spider crab has the largest leg span of any arthropod, reaching over 12 feet in length.

Queen termites have a really long lifespan and they are the oldest termite in the colony. They can live up to fifty years and produce eggs for up to ten years.

The world’s largest specie of earthworm can be found in Gippsland in southeastern Australia. The giant Gippsland earthworm can grow as big as ten feet long.

According to Guinness World Records, the smallest dog in terms of length is Brandy, a female Chihuahua from Florida. She measures only 6 inches  from the nose to the tip of her tail.