From what I have seen of a lot of people I know that breed they use a bigger female and a much smaller male. Sometimes you get problems for the male to mount the bigger female so
they have said and recommended putting big boy on or putting a cushion or phone book
for him to stand on so he can get where he needs to go....lol.
Can you just get the visual here...lol. It makes me laugh to no end. One breeder I know said that she has to hold her female in place once they join up because at times she would go running and be dragging the little boy behind her like a flag waiving in the wind.