The River Idle is a critical habitat for eels - with an eel pass being installed in 2018 to help silver eels get upstream. 9 species of bats have been recorded in and around the town including Daubenton's bat, whiskered bat, Brandt's bat, Natterer's bat, common noctule, Leisler's bat, common pipistrelle, soprano pipistrelle and brown long-eared bat. And a range of mammals and amphibians can be seen such as hedgehog, frog, rabbit, brown hare, grey squirrel, toad, newts, mole, badger and red fox.