Tail fat is fat of some breeds of sheep, especially of fat-tailed sheep. It is fat accumulated in baggy deposits in the hind parts of a sheep on both sides of its tail and on first 3-5 vertebrae of the tail. The weight of this part of sheep anatomy may be up to 30 kg. It is used for accumulating fat for its subsequent use during dry seasons, similar to camel's humps. In Russian and Central Asia the corresponding part of the anatomy are known under the name kurdyuk, derived form kuyruk, the Turkic word for "tail". Tail fat is known in Arabic as لية, leeyeh or leyyah and in Farsi as donbeh or dombeh, which words may be found in local culinaries and names of sheep breeds.