This week's selection comes from Cheryl Tipp, Curator of Wildlife and Environmental Sounds.

If somebody were to ask “what does a Koala sound like”, what would you say? It’s difficult to even hazard a guess as these cuddly, tree-loving marsupials are so unlike any other animals. Found only in Australia, they belong to the same class of mammals as kangaroos, wallabies, possums and wombats and, contrary to popular culture, are not related to bears at all!

With a cuteness factor that's off the chart, it comes as a bit of shock when they open their little mouths and produce this – a low, grating bellow more suited to a braying donkey with a sore throat.

The natural world is always full of surprises!

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