Otters [electronic resource] : ecology, behaviour and conservation / Hans Kruuk. Kruuk, H. (Hans) Otters Behavior. Otters Ecology. Otters Conservation. QL737.C25 599.7'69 22 Includes bibliographical references and index. Description based on print version record. Hans Kruuk offers a meticulous survey of otter species and recent research into their ecology, covering all 13 species worldwide & emphasising conservation management initiatives. Oxford : Oxford University Press, 2006. 2006. 2006 Text 1 online resource (xii, 265 p.) : http://dx.doi.org/10.1093/acprof:oso/9780198565871.001.0001 eng