The largest difference between the opossum and non-marsupial mammals is the bifurcated penis of the male and bifurcated vagina of the female (the source of the term "didelphimorph," from the Greek "didelphys," meaning double-wombed). Opossum spermatozoa exhibit sperm-pairing, forming conjugate pairs in the epididymis.Class: Mammalia.
Nov 30, 2012 · Cats have barbed penises. Something about pain triggers female cats (who are called queens, for obvious reasons) to ovulate. The little keratin barbs also account for some of the caterwauling that accompanies a late night cat party. Opossum.
Actually, the female opossum was either cleaning the pouch prior to the birth or licking the area to soothe her swollen teats. Another reason for this belief is the shape of the male opossum’s penis. It is bifurcated, like a 2 pronged fork. It was believed that the shape of the penis was a perfect fit for the female opossum’s nose.