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Tuesday, September 24, 2013

Canine placental sites

Keywords: canine, anatomy, involution, placental, sites, uterus

A canine uterus viewed from its dorsal aspect. The tract is from a mature bull mastiff bitch. Placental sides from a previous pregnancy are shown here. Bitches experienced the slowest uterine involution of all domestic species; about 90 days in duration. However even after involution is complete, evidence of previous pregnancies may be visible. Judging by the presence of corpora lutea in the ovaries of this animal, these placental sides must have been approximately 6 months old.