From strange behaviour to interesting prey-vs.-predator relationships to fantastical creatures, the animal world is full of fascinating facts about our furry, feathered and scaly friends:

The wood frog burrows into the leaf litter in winter; its heart, brain and eyeballs freeze, and they defrost again in the spring.

In 2006, a hunter shot and killed a hybrid of a grizzly and a polar bear, dubbed a grolar or pizzly bear, the first to be found in the wild.

The bombardier beetle protects itself by expelling a boiling hot chemical spray from its rear end.

A woodpecker's tongue is so long that it rolls up in the bird's skull like a tape measure in its case.

Rabbits produce two kinds of stool: one that the animal eats, which is rich in vitamins and nutrients, and another that is waste matter.

Some clever crows drop nuts onto roadways so that passing vehicles drive over them and break the shells open.

The horned lizard defends itself by squirting blood from its eyes.

Canada was home to 2.5-metre-long giant sea scorpions 400 million years ago.

And so much more...