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The Shetland is a small, wool-producing breed of sheep originating in the Shetland Isles, Scotland, but is now also kept in many other parts of the world. It is part of the Northern European short-tailed sheep group, and it is closely related to the extinct Scottish Dunface .
The hemipenis is the intromittent organ of Squamata, [4] which is the second largest order of vertebrates with over 9,000 species distributed around the world. They differ from the intromittent organs of most other amniotes such as mammals, archosaurs and turtles that have a single genital tubercle, as squamates have the paired genitalia remaining separate. [5]
The Shetland is a small, hardy Scottish breed of cattle from the Shetland Islands to the north of mainland Scotland. The cattle are normally black and white in colour but there are smaller numbers in grey, red and dun .
The Shetland Pony is a very small, robust breed of pony. Shetlands range in size from about 710 to 1070 mm, with an official maximum height at the withers (1200 mm for American Shetlands). Shetland Ponies have heavy coats and short legs, and are considered quite intelligent. They are a very strong breed, used for riding, driving, and pack purposes.
The Cestida ("belt animals") are ribbon-shaped planktonic animals, with the mouth and aboral organ aligned in the middle of opposite edges of the ribbon. There is a pair of comb-rows along each aboral edge, and tentilla emerging from a groove all along the oral edge, which stream back across most of the wing-like body surface.
The Shetland pony and Shetland Sheepdog are two well-known Shetland animal breeds. Other animals with local breeds include the Shetland sheep, cow, goose, and duck. The Shetland pig, or grice, has been extinct since about 1930.
A true endoskeleton is derived from mesodermal tissue. In three phyla of animals, Chordata, Echinodermata and Porifera (), endoskeletons of various complexity are found.An endoskeleton may function purely for structural support (as in the case of Porifera), but often also serves as an attachment site for muscles and a mechanism for transmitting muscular forces as in chordates and echinoderms ...
Shetland Sheepdogs have four times the risk of other dogs of developing transitional cell carcinoma, a cancer of the bladder. [12] A North American study of over a million hip scores in dogs over the age of two found the Shetland to have the fifth-lowest prevalence out of sixty breeds—4.2% of Shetlands had hip dysplasia. [13]