We all have that one friend who just loves to drop random facts into conversations, just to prove they know stuff. For Dermot, Dave is that friend!

If you’ve ever wondered why airports are laid out the way they are, what you can do at the speed of sound, or what colour eyes you’re best off having, then Dave’s World is the place for you!

Today it was all about the animal kingdom as Dave taught us the different types of wags a dog's tail has, told us something elephants cannot do, had an incredible fact about swifts and talked a load of poop.

You can listen to the fun in full by pressing play in the image above the headline at the top of the page.