作者qzpm (左上左下右上右下)
看板pet
标题Re: [问题]肛门啊肛门 你真是个神奇的东西
时间Fri Aug 31 20:38:02 2007
Anal Glands (Sacs)
Veterinary & Aquatic Services Department, Drs. Foster & Smith, Inc.
Location and function of anal glands
As the dog or cat is viewed from behind, anal glands (also called anal sacs)
are located on each side of and slightly below the anal opening, at the 4
o'clock and 8 o'clock positions. A tiny duct or tube leads under the skin to an
opening directly beside the anus.
All predators, whether they are canines or felines in the wild or skunks in
your backyard, have anal glands. They just use them differently. Skunks
discharge the secretion from these glands as a form of defense, while dogs use
it primarily for territorial marking or as a form of communication. In dogs and
cats, every time a stool is passed, it should put enough pressure on the anal
glands that some of the secretion is deposited on the surface of the stool.
Other dogs and cats are then able to tell who has been in the neighborhood,
just by sniffing the stools they find. Additionally, dogs and cats recognize
each other by smelling each other in the general area of the anus, since each
animal's anal glands produce a unique scent.
Reference:
http://www.peteducation.com/article.cfm?cls=2&cat=1571&articleid=510
简单的说,就是拿来标记气味,犬猫都有这样的功能,可以用来区分地域性。
一般在大便时肌肉的收缩,会导致肛门腺的分泌物沾附在粪便上,来达到标记的功能。
在臭鼬的应用上就比较不同,主要拿来防御。
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 219.86.66.52
1F:→ qzpm:除此之外还有围肛腺(Circumanal gland),一种内分泌腺。功能 08/31 20:42
2F:→ qzpm:不明。围肛腺瘤是最常被讨论的病变。 08/31 20:42
3F:→ qzpm:如果肛门腺不定期清理,会发生脓疡甚至破裂。造成感染剧痛。 08/31 20:45
4F:→ qzpm:上上面那句改成"围肛腺瘤是围肛腺中最常被讨论的病变"才对。 08/31 20:47
5F:→ qzpm:太久没挤,动物会有坐在地上,屁股拖地滑行的滑稽动作。当然 08/31 20:49
6F:→ qzpm:这样的动作也有可能是寄生虫感染所造成。 08/31 20:50
7F:→ qzpm:另外高纤维的饮食,可增大粪便体积,有助於肛门腺分泌。 08/31 21:03