My first partner, he was into it. I learned that you should take it slow, really slow. It’s unfamiliar ground for them so go slow. Use your hands, but make sure you file your nails down so much so that you can’t scratch him.
Water base lube at every opportunity, you want it to be so wet that it’s dribbling down onto the carpet.
Slow, I don’t mean slow over a day, no a week. You introducing him to something unfamiliar and awkward, trust is important. You start from the bare minimum and move at his pace, there is a chance he won’t like it and that’s when you stop for good.
However if he doesnt mind it, you still move slow. Your focus should be on him the entire time, not your pleasure, you have to forget about that for a bit.
Eventually you will be able to get to a point where you can penetrate, and when you do be slow and pay attention to your angle, not straight in but tilted so slightly and move slowly.
Make sure the lube is still dripping from him and once that is done then you should be good. The reason people don’t talk about it here is because listen to this process, it’s complicated, long and some even then will argue that you were just grooming him.
However this is the best way, from my experience if your partner is into it then you will know because there should be zero resistance and should be comfortable even while your inside. I only ever had one partner who would let me whenever, I still took the precautions for the most part, it’s not worth the risk to be irresponsible
If you’re not able to commit to something this delicate and willing to put in days of work on trust then the risk is not worth it. Anal is risky with a dog to begin with but instead of saying no or refusing to elaborate because most won’t be this careful is dangerous.
Horny people will be horny and it’s best that they are armed with the information to do it safely properly regardless, because some one can get hurt if they are doing this blind.
No form of sex with a dog is without its risks, even vaginal and being topped can be risky for both parties. Everyone should be armed with all knowledge no matter if you see it one way or the other because no information is what causes accidents to happen