Introductory guide with descriptions of 65 UK wild mammals, including both native and introduced species, the terrestrial, aerial and marine varieties, as well as certain extinct species. Information for each species is presented to include both common and scientific names, a general introduction covering habits, behaviour and general appearance. Also included is information on head-body length, tail or ear length, weight, lifespan, breeding, diet, habitat, threats, status and distribution. Ordered according to the orders that they belong, this booklet will prove a useful resource both in the field and for the lay reader at home.