A book by two naturalists discussing the decline of some animal populations in Britain. These range from beavers (where people sneakily rewild them) to hedgehogs (so many hedgehog hospitals) to red squirrels (outcompeted by greys) and one kind of seal. They visit locations trying to spot these animals, and discuss the political issues involved with trying to save one species when balanced against others. Some good humor and trivia along the way, quite good