extreme beastiality

Well iv been coming on this site alot, iv always wanted to have sex with a female dog, but seeing lots of pictures on here of mares, i fell inlove! haha i met this girl not long ago and she would always talk bout her horses, so i went to her house 1 time an she showed me her hourses, 2 mares well just a lil while ago i snuck over there in the cover of darkness and hopped the fence and right away 1 of the mares walked up to me, i pet her nose and walked behind her, she didnt move much, even when i lifted her tail aside, i started feeling around with my fingers, her pussy was so soft an velvety, i pulled out my flash light so i could see her very beautiful pussy, almost emediatly after seeing it i dove in an started licking it, i onmly got to for a few seconds b4 she pulled away, i spit on my fingers an rubbed them on her pussy an slowly pushed them in, she raised her tail for me, so i started fingering her, shortly after.. bout just over half a minute, her pussy starts quivering an she pulled away, i dont know if she orgasmed already or wut, but when i put my fingers back in her it was really wet, and after that had happened she wouldnt let me put my fingers or my tongue in her for more then a few seconds at a time, wich really really sucked cuz i would loved to eat that pussy for a long time, and i was hoping id the the chance to put my cock inside her, her pussy was really really tight, and actually quite sweet too i can still smell her pussy on my fingers any 1 got any advice on how i would be able to play with her longer with out her pulling away? and maybe tips on gettin her to back up to the fence so i can fuck her? thanx?? maybe nex time ill be able to get some pics!