I discovered something curious with my bitch yesterday.
She allows me to fuck her mouth often, she never looked bothered about it not even the first time I did it.
Since some days ago she finally went on her three years heat and I was planning to fuck her, but no matter how much I played with her pussy and teased her she never leaked even a bit.
So I gave up but I was already pent up so I fucked her mouth as usual, I decided to finger her while doing it and surprise, she was soaking.
She even took my balls in her mouth as I was deep in her throat for the first time with zero effort, I think I conditioned her to get the same satisfaction from getting her muzzle fucked as with mating.