Rump (animal)

Rump (animal)
The rump is anterior to the animal's tail (here on a draft horse)

The rump or croup, in the external morphology of an animal, is the portion of the posterior dorsum that is posterior to the loins and anterior to the tail. Anatomically, the rump corresponds to the sacrum.

The tailhead or dock is the beginning of the tail, where the tail joins the rump. It is known also as the base or root of the tail, and corresponds to the human sacrococcygeal symphysis. In certain mammals the tail may be said to consist of the tailbone (meaning the bony column, muscles, and skin) and the skirt (meaning the long hairs growing from the tailbone). In birds, similarly, the tail consists of tailbone and tailfan (tail fan).

Anatomy of the horse, rear view

Some animals are subjected to docking, the amputation of the tailbone at or near the dock. These include dogs, cats, sheep, pigs, and horses. Humans have a remnant tail, the coccyx, and the human equivalent of docking is coccygectomy.

Contents

Usage

Usage varies from animal to animal. Birds and cattle are said to have a rump and tailhead. Dogs are said to have a rump and dock. Horses are said to have a croup[1][2][3] (sometimes rump)[4], thigh or haunch, buttock, and dock.

Parts of a bird, rump labeled 10

Birds

In bird anatomy, the rump is the body immediately above the tail. The color of plumage on the rump is a characteristic widely used by ornithologists to distinguish between related species, and sometimes also between males and females of the same species. Similarly, the silhouette of the tailfan is a characteristic widely used for purposes of identification, particularly in the field.

Some birds have a food reservoir pouch in the esophagus that is known as a croup.

Parts of a dog, rump labeled 7L, dock labeled K

Dogs

In some breeds it is traditional for tails to be cut off (docked) at the dock.

Parts of the horse

Horses

Quarter marks in checkerboard pattern on a horse's croup

In horse anatomy, the croup refers specifically to the topline of the horse's hindquarters and surrounding musculature, beginning at the hip, extending proximate to the sacral vertebrae and stopping at the dock of the tail (where the coccygeal vertebrae begin). Below the croup is the Thigh or Haunch. Behind the thigh is the buttock. On horses appearing in parades and other public ceremonies, the croup may be decorated with a pattern in the horse's hair, formed by applying hair gel or spray, then brushing patches of hair in opposite directions.

"Long" dock (i.e., skirt not covering the entire tail) of a Przewalski horse

Applied to horses, the term dock has two additional uses. Its meaning may be extended to the entire tail minus the skirt (i.e., synonymous with tailbone)[1][5] Or to the tailhead only.[6] In other equidae, it encompasses most of the tailbone, as most of that portion of the tail does not have long hairs. A lack of long hairs can be natural, as in zebras, donkeys, and the Przewalski horse, or artificial, the result of pulling, trimming, or shaving part of the skirt (see Horse grooming).

A sponge used to wash the hairless skin on the underside of the dock and other regions under the tail, protected by the dock, is called a dock sponge. Thus, the meaning of "dock" has been used to refer to the orifices beneath the dock, specifically the anus and vagina, creating a misapprehension that "dock" refers to the anus, as in, a horse's fundamental orifice is its dock.[7]

References

  1. ^ a b "How do I...Identify Parts of the Horse" Arabian Horse Association(croup)
  2. ^ "Body parts of the horse" (Croup)
  3. ^ "Identifying Horse parts and markings for Dummies" (Croup)
  4. ^ "Learning the parts of the horse" American Miniature Horse Association (uses rump or croup)
  5. ^ Blocksdorf, Kathering. "Parts of the Horse - The Dock." About.com Accessed September 2, 2008
  6. ^ "Parts of the Horse" 4-H Horse Project Manual Accessed September 2, 2008 (Describing dock as the entire tailbone, but with image pointing to tailhead)
  7. ^ Carew, Tim (1974). Wipers: First Battle of Ypres. Hamilton. pp. 230. , page 49

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Look at other dictionaries:

  • Rump — Rump, n. [OE. rumpe; akin to D. romp trunk, body, LG. rump, G. rumpf, Dan. rumpe rump, Icel. rumpr, Sw. rumpa rump, tail.] 1. The end of the backbone of an animal, with the parts adjacent; the buttock or buttocks. [1913 Webster] 2. Among butchers …   The Collaborative International Dictionary of English

  • Rump Parliament — Rump Rump, n. [OE. rumpe; akin to D. romp trunk, body, LG. rump, G. rumpf, Dan. rumpe rump, Icel. rumpr, Sw. rumpa rump, tail.] 1. The end of the backbone of an animal, with the parts adjacent; the buttock or buttocks. [1913 Webster] 2. Among… …   The Collaborative International Dictionary of English

  • Rump steak — Rump Rump, n. [OE. rumpe; akin to D. romp trunk, body, LG. rump, G. rumpf, Dan. rumpe rump, Icel. rumpr, Sw. rumpa rump, tail.] 1. The end of the backbone of an animal, with the parts adjacent; the buttock or buttocks. [1913 Webster] 2. Among… …   The Collaborative International Dictionary of English

  • rump — [rʌmp] n [Date: 1400 1500; Origin: From a Scandinavian language] 1.) the part of an animal s back that is just above its legs 2.) rump steak good quality meat that comes from the rump of a cow 3.) the part of your body that you sit on used… …   Dictionary of contemporary English

  • rump — hind quarters, buttocks of an animal, mid 15c., from a Scandinavian source (Cf. Dan., Norw. rumpe, Swed. rumpa), cognate with M.Du. romp, Ger. Rumpf trunk, torso. Sense of small remnant derives from tail and is first recorded 1640s in reference… …   Etymology dictionary

  • rump — [rump] n. [ME rumpe < ON rumpr, akin to Ger rumpf, trunk (of the body) < IE base * remb , * romb , to chop, notch > Czech roubiti, to chop] 1. the hind part of the body of an animal, where the legs and back join, or the sacral part of a… …   English World dictionary

  • rump — [ rʌmp ] noun count 1. ) the part of an animal s body above its back legs 2. ) a small part of a company, a group of people, or a country that remains when the rest of it has left or has been removed 3. ) HUMOROUS your BUTTOCKS …   Usage of the words and phrases in modern English

  • rump — [n] bottom, posterior of animal or human back, backside, beam, behind, breech, bum*, butt, butt end, buttocks, can*, croup, derrière, duff*, fanny*, haunches, hind end, hindquarters, keister*, moon*, prat, rear, rear end, sacrum, seat, tail*,… …   New thesaurus

  • animal behaviour — Introduction       any activity of an intact organism.       A living animal behaves constantly in order to survive, and all animals must solve the same basic problems. They must, for instance, periodically replace their energy source (consume… …   Universalium

  • Rump (croup) — The rump or croup, in the external morphology of an animal, is the portion of the posterior dorsum that is posterior to the loins and anterior to the tail. Anatomically, the rump corresponds to the sacrum. The tailhead or dock is the beginning of …   Wikipedia


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