The behaviour of Britain's wildlife is raising alarm about the seriousness of climate change as animals' breeding patterns are thrown into confusion. The second mildest winter on record has resulted in mammals, reptiles, birds and insects emerging from shelter far too early. They are getting caught out by cold snaps or wet weather and the young of many species are dying. Baby hedgehogs, baby squirrels, even baby grass snakes are being found in distress in many places.