Domestic Dog
Canis familiaris
11.7 cm (range 9 cm–15 cm)
Length of the erect pars longa glandis, penis tip to start of the bulbus glandis (tape measure, lateral side)
Has a bone
When a dog is erect, the bulbus glandis swells to an average of 5.75 cm long. This swelling is what holds a mating pair together in the 'tie'.
Margin note: A lock-and-key mechanism in which the key swells.
Sources
- Hölscher C. (2012) Funktionelle Anatomie und Sonographie des Rüdenpenis. Dr. med. vet. dissertation, Justus-Liebig-Universität Gießen (JLUpub, urn:nbn:de:hebis:26-opus-87509). Data published as Goericke-Pesch S., Hölscher C., Failing K., Wehrend A. (2013) Theriogenology 80(1):24–33 link
- Saadon A.H. (2016) Anatomical and histological study of local dog penis. Mirror of Research in Veterinary Sciences and Animals 5(3):8–14 link
Drawn from
- Hölscher 2012, Abb. 2 (after Budras 2000): Labelled lateral anatomical overview of the (non-erect) dog penis: pars longa glandis, bulbus glandis, os penis, corpus spongiosum, urethra
- Hölscher 2012, Abb. 5: Photo of the tape-measure method: pars longa glandis and bulbus glandis lengths