A Few years ago, on the FORBIDDEN_WEBSITE! bestiality board (i think), I saw a very interesting post that some of you may enjoy. It was accompanied by a dozen or so pictures and a 6 part video.
There was a guy who used a condom to collect the semen from his male dog. He then collected the cum from his dog into a syringe. He then used a catheter, only partially inserted into his own erect penis, and a compatible syringe to basically inject the dog's cum and force it up his own urethra. After he had put the dog's cum up his own penis, he removed the catheter and he then proceeded to start to have sex with a female dog.
If you ever wanted to actually impregnate a dog yourself, that would seem to be the closest you could ever come to actually doing it. Putting actually dog cum in your own penis, so that when you put your own penis into a dog the cum leaks out or is forced out when you cum yourself to attempt to breed the dog yourself.
Of course that comes with a whole mess of safety issues and is probably best not attempted.
