In 2012, following the death of  “Meow,” a cat who weighed 39.6 pounds, the Guinness Book of World Records stopped recording the heaviest pets in the world to discourage deliberate overeating.

When a cat brings back a dead animal, it’s actually acting out its natural role as a mother and teacher, showing its owners how to catch and eat prey, just like they would teach their young in the wild.

Raccoons are quite smart. They can open complex locks in under ten tries and can still repeat the process if the locks are rearranged or turned upside down. They’ll also remember solutions to problems for up to 3 years.

A group of porcupines is called a prickle.

The barreleye fish has a completely transparent head. It inhabits depths of around 2,000 feet to 2,600 feet where the darkness approaches absolute black.