>>54910793>not understanding how equids workA mare's sensitive bits are all located within the first 6 inches of her vaginal passage with the final inches being smooth nerveless muscle. A tiny dick would cause no issue for her, because it would completely disturb all the pertinent bits of her body, with no silly wasted length at the tip missing critical spots. And given this can completely fry a mare's brain by orgasm - literally fucking her senseless, due to stallions evolving for ease of mating to protect the herd, rather than making its partner feel good, such intercourse can lead the mare to become addicted to her Human's cock and the feelings of pleasure he gives her.
He may get the odd shock, but that'll be more down to her losing her biscuits and letting forth a jolt from pleasure than any desire to gee him up.