The bulbus glandis is an erectile tissue structure unique among domesticated animals to the canine penis. Erectile tissue is tissue in the body that can become erect, usually by becoming engorged with blood. ... This is a list of animals that have been domesticated by humans. ... A canine may refer to: a canine tooth. ... The penis (plural penises) is in addition to the scrotum one of the external male sexual organs. ...

After the male dog mounts and penetrates the bitch, the bulbus glandis becomes engorged with blood. It forms a spherical structure at the base of the penis, proximal to the os penis. There is a corresponding ridge of erectile tissue in the bitch's vagina; when this becomes engorged behind the engorged bulbus glandis, the penis is trapped within the vagina. This forms a seal to hold the semen within the bitch's reproductive tract, and prevents the couple from separating during copulation when the male turns away from the female (see Canine copulation). Look up Bitch in Wiktionary, the free dictionary The word bitch — originally used for the female members of the canidae family, especially dogs — is more often employed in a figurative sense to either insult a woman, or to describe one who is malicious, spiteful, domineering, intrusive, and/or unpleasant (it... In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... Genera Alopex Atelocynus Canis Cerdocyon Chrysocyon Cuon Dusicyon Fennecus Lycalopex Lycaon Nyctereutes Otocyon Pseudalopex Speothos Urocyon Vulpes Canidae is the family of carnivorous and omnivorous mammals commonly known as canines. ...