The Visual Guide to
Canine Reproduction
- Testis and Epididymis
- Scrotum
- Accessory Sex Glands
- Penis
- Prepuce
- Semen
- Breeding Soundness Evaluation
- Castration
Male Reproductive System: Penis

Transmissible Venereal Tumor.
TVT in Ubon, Thailand. The penis is extended with a loop of gauze.
Wright JM (1971)

Transmissible Venereal Tumor.
Healing lesions of transmissible venereal tumors (TVT) after surgical removal.
Wright JM (1971)

Paraphimosis.
The dog is unable to withdraw his engorged penis due to phimosis of the the preputial opening. Phimosis is a narrowness or constriction of the (preputial) orifice.
Shille VM (1981)