Theodore Roosevelt had guinea pigs called Admiral Dewey, Bishop Doane, Dr Johnson, Father O’Grady and Fighting Bob Evans, and a small bear called Jonathan Edwards.

Camel urine is as thick as syrup.

Whale milk has the consistency of toothpaste.

Reindeer have golden eyes in summer and blue eyes in winter.

You can tell if a duck has bird flu by smelling its droppings.

Chimpanzees can identify each other by looking at photographs of their bottoms.

Lizards can’t breathe and walk at the same time.

The giant palm salamander can stick its tongue out 50 times faster than you can blink.

Lobsters listen with their legs.

Hummingbirds lay eggs the size of peas.

Seahorses beat their fins almost as fast as hummingbirds beat their wings.

Vultures can turn a dead body into a skeleton in under five hours.