Which are the world's tallest animals?Published26 July 2016Image caption, A new study shows that Dutch men are the tallest in the world at 1.83 metres. UK men come in at an average of 1.78 metres. But they are tiny in comparison to lots of the world's biggest animals! We've been taking a look at some of our taller cousins in the animal kingdom.Image source, Getty ImagesImage caption, The blue whale is the biggest of the lot - averaging around 30 metres in length! Their tongues alone can weigh as much as an elephant and their hearts are as heavy as a car. Incredibly, their diet is almost made up entirely of tiny shrimp-like creatures called krill.Image source, Getty ImagesImage caption, Small but mighty long, the Lion's mane jellyfish has tentacles that can grow to 30 metres. It uses its long stinging tentacles to grab prey, like smaller jellyfish, and pull them in to eat.Image caption, Giraffes are the world's tallest mammals - its legs alone are taller than most humans. Giraffes even have super long tongues - which they use to grab leaves and buds from high branches.Image source, Getty ImagesImage caption, The saltwater crocodile is the largest of all reptiles, and can grow up to six metres long. They lurk at the edge of water, waiting for prey to stop to take a drink - and then drag them under. They've even been known to eat sharks!Image source, Getty ImagesImage caption, Brown bears can reach up to three or four metres when they're standing on their hind legs - making them one of the biggest animals on land.Image source, Getty ImagesImage caption, African elephants are around three metres tall at shoulder height. They've even got big teeth - each molar weighs around five kilograms and is about 30 cm long.More on this storyGuide: Big animals at the dentistPublished12 May 2016Steve Backshall's new animal show. Video, 00:00:53Steve Backshall's new animal showPublished23 August 20150:53The big weigh in at London ZooPublished26 August 2011