Animal action with Rani Price and Johny Pitts. There's a heat wave in the parks so Johny Pitts tries to get some tips from the animals about how to chill out. Some go for a swim, others use their big ears, whilst the really cool ones love to sunbathe! Also why are a giraffe's front legs longer than the back ones? And why are the keepers smeering mud on the rhinos?