I've kinda wondered which hole a dogs knot get stuck in better and longer. A girls pussy or a man's ass.
That is some really good information. thank you I was wondering why it always slips out.The human vagina is not equipped with the same constrictor muscle a female dog has. So you will frequently see dogs pop the knot out of a woman fully inflated with no resistance at all. You will very often see this in porn + the dog will attempt to mount the woman 5 times failing each because nobody is holding the knot which the dog expects to happen. If they just put a hand back there and provided some support on the knot, the dog would stay there. Of course then you need to hold the knot when the dog turns 180.
The human anus has a sphincter and has a better chance of keeping the knot in, but it is still quite weak compared to the female dog.