a young sheep of either sex from about 9 to 18 months of age (until it cuts two teeth); a yearling sheep, as yet unshorn. Also the meat of a hogget. Also teg, old-season lamb, shearling. Hoof-shears – implement similar to secateurs, used to trim the hoofs of sheep. In lamb – pregnant. Joining – the placing of rams with ewes for mating (see tupping). Ked, or sheep ked – Melophagus ovinus, a species of louse-fly, a nearly flightless biting fly infesting sheep. Kemp – a short, white, hollow, hairy fibre usually found about the head and legs of sheep. Killer – a sheep that has been selected for slaughter on an Australian property. Also see cull ewe. L-N Lamb – a young sheep in its first year. In many eastern countries there is a looser use of the term which may include hoggets. Also the meat of younger sheep. Lambing – the process of giving birth in sheep. Also the work of tending lambing ewes (shepherds are said to lamb their flocks). Lambing jug or lambing pen – a small pen to confine ewes and newly born lambs. Lamb marking – the work of earmarking, docking and castration of lambs. Lambing percentage – the number of lambs successfully reared in a flock compared with the number of ewes that have been mated – effectively a measure of the success of lambing and the number of multiple births. May vary from around 100% in a hardy mountain flock (where a ewe may not be able to rear more than one lamb safely), to 150% or more in a well-fed lowland flock (whose ewes can more easily support twins or even triplets). Lamb's fry – lamb's liver served as a culinary dish. Lamb fries – lamb testicles when served as a culinary dish. Lanolin – a thick yellow greasy substance in wool, secreted by the sheep's skin. Also called wool fat, wool wax, wool grease, adeps lanae or yolk. Extracted from raw wool and used for various purposes. Livestock guardian dog – a dog bred and trained to guard sheep from predators such as bears, wolves, people or other dogs. Usually a large type of dog, often white and woolly, apparently to allow them to blend in with the sheep. Sometimes given a spiked collar to prevent attack by wolves or dogs. Does not usually muster the sheep. Sometimes called a