>>512129943
Found it on archive.
https://archive.org/details/van-den-vos-reynaerde-1941

>Eventually, Jodocus manages to promote animal miscegenation. "Then there was a great confusion amongst the animals. They had become true brothers and mated amongst each other. The bull and the goat, the hare and the fish, the ferret and the wild boar; because they didn't recognize each other, and confused each other's names and habits, they ate their own children." The animals bring forth bastards, and that is just what Jodocus wanted, "because the bastard has no standards of his own, and is prepared to accept those of anyone."
https://www.awn.com/mag/issue1.7/articles/barten1.7.html