digplanet beta 1: Athena
Share digplanet:


Applied sciences






















Not to be confused with Bulbourethral gland or Bulb of penis.
Erect bulbus glandis (1) in a Labrador Retriever

The bulbus glandis (also called a knot) is an erectile tissue structure on the penis of canid mammals, including wolves,[1][2][3][4] coyotes[5] and Darwin's fox.[6] During mating the tissues swell up and lock (tie) immediately after penetration of the male's penis inside the female. The locking is completed by circular muscles just inside the female's vagina tightening thus preventing the male from withdrawing. The circular muscles also contract intermittently, which has the effect of stimulating ejaculation of sperm, followed by prostatic fluid, as well as maintaining the swelling of the penis and therefore the tie, for some time. For domestic dogs the tie may last up to half an hour or more, though usually less.[7]

See also[edit]


  1. ^ MobileReference (15 December 2009). The Illustrated Encyclopedia of North American Mammals: A Comprehensive Guide to Mammals of North America. MobileReference. pp. 977–. ISBN 978-1-60501-279-7. Retrieved 10 December 2012. 
  2. ^ Kim Long (1996). Wolves: A Wildlife Handbook. Big Earth Pub. ISBN 978-1-55566-158-8. Retrieved 10 December 2012. 
  3. ^ L. David Mech (16 May 2012). Wolf. Random House Digital, Inc. pp. 172–. ISBN 978-0-307-81913-0. Retrieved 10 December 2012. 
  4. ^ Marshall Cavendish Corporation (1 September 2010). Mammal Anatomy: An Illustrated Guide. Marshall Cavendish. pp. 252–. ISBN 978-0-7614-7882-9. Retrieved 10 December 2012. 
  5. ^ Debra A. Carlson (2008). Reproductive Biology of the Coyote (Canis Latrans): Integration of Behavior and Physiology. ProQuest. pp. 67–. ISBN 978-0-549-50315-6. Retrieved 9 February 2013. 
  6. ^ H. M. Menino (2008). Darwin's Fox and My Coyote. University of Virginia Press. pp. 101–. ISBN 978-0-8139-2675-9. Retrieved 9 February 2013. 
  7. ^ Susan Long (2006). Veterinary Genetics and Reproductive Physiology. Churchill Livingstone Elsevier. ISBN 978-0-7506-8877-2. 

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Bulbus_glandis — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
24 videos foundNext > 

dog mate-II (black doberman Vs brown doberman)

2nd time they mate. What will happen after preganancy date?

Collection of Dogs semen for Artificial Insemination

Collection of Dogs semen for Artificial Insemination, Learn Insemination tips and techniques from my farm house.

Dick Science Episode 11: Knot

The knot is technically called the bulbus glandis. The resulting bond between mating dogs is called knotting or tying. Closely related mammals such as wolves...


FUNNY DOG SEX A few years ago, somebody made a funny comedic hilarious LOL skit out of the notion of dogs having erectile dysfunction. It was such a funny id...

Kind stört Hunde bei der Paarung

Da hat der Kleine aber Glück gehabt. Beim Deckakt des Hundes kommt es zum bemerkenswerten Verhalten des „Hängens. Auf die Penetration der Hündin hin kommt es...

What 3 PUGS do in the night. Nature's Secret in the video. Part II

What 3 PUGS do at the night. Nature's Secret in the video.How do dogs mate? es it seem Pugs is always sleeping? It's not just your imagination. Dogs spend a ...

Inseminacion Artificial

All About - Penis (Extended)

What is Penis? A report all about Penis for homework/assignment A penis (plural penises or penes ) is the primary sexual organ that male and hermaphrodite an...

Canine Neuter Procedure with Doc Pawsitive

Doc Pawsitive, Clair Thompson, "Leader of the Pack" at East Stroudsburg Veterinary Hospital and PAWS/Pocono Animal Wellness Services is shown in this video c...

Sequence Stallion Semen Extraction

24 videos foundNext > 

We're sorry, but there's no news about "Bulbus glandis" right now.


Oops, we seem to be having trouble contacting Twitter

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!

Searchlight Group

Digplanet also receives support from Searchlight Group. Visit Searchlight