The Dorset or Dorset Horned breed of sheep is known mostly for its prolific lambing. It has been known to produce two lambing seasons per year: bred in May for lambs finished by the holidays, and bred again immediately after the first lambing to produce again in March or April (from Wikipedia).
Dorset Horn Sheep. Image source: Flickr Sheilaellen's photostream, Creative Commons license.
The Dorset Horn was developed in the mid 1800s. Its chief distinction is its horns – large and curled – in both rams and ewes.
Dorset (pronounced /ˈdɔrsɪt/) (or archaically, Dorsetshire), is a county in South West England on the English Channel coast. The county town is Dorchester.
Dorset county in South West England. Image source: Wikipedia, public domain.
Dorset Horn Sheep - A Rare Breed of British Origin. Rare Breeds Conservation Society of New Zealand Incorporated.
A to Z of Sheep Breeds. National Sheep Association.
Dorset Horn and Poll Dorset Sheep Breeders' Association
Dorset, "Breeds of Livestock," Oklahoma State University (with photographs).
The Domestic Sheep by Henry Stewart (1898), "The Dorset" (with photographs).
Autumn lamb. Clarissa Hyman. BBC, The Food.
Farming Today BBC Podcast and Radio Program.
The world's largest sheep - Where? Goulburn, Australia - How big? 15 glorious meters http://goo.gl/61AlR