Well from my perspective as a man who loves dogs (don't fuck them btw), I can really see how sex between women and male dogs happens naturally and easily on its own. Dogs love to lick, they can smell your pheromones and they instinctively know how to hump and don't need much encouragement at all. I mean what's knot to love? The dog's body heat, their licking, the way they ram it home and fuck like crazy fast, and of course the knot and all the cum and pulsating. I bet the numbers are a lot higher but women are a lot smarter than men so they keep it a secret. lol
As far as having someone influence you, I think just about all women who are into it, love it, and secretly want to share that knowledge with their friends. As far as guys getting you into it, as one of those horny heterosexual guys, I can see that too but not the serial conversion therapy and then moving on, wtf?
Of course, the taboo societal disgust keeps women from trying it even if they think about it, and if/when they do make that leap then that aspect makes it even more exciting.
Just my 2 cents worth of opinion...lol