~chuckling~
Two funny stories come to mind... One is a guy with the jack donkey Bob bred his mare to to get his mule. The owner said he'd have no trouble with a QH sized mare... only has trouble finding a ditch to stand big ole draft mares in for the little guy.
The other story was the poor Labrador male we had when I was a kid. He got loose and went down the street where there was a very willing Great Dane. He had worn himself almost to exhaustion trying, but he just couldn't figure it out. It was a very sad sight.
We actually scooped out a low spot to stand my mare in in the arena with the bobcat the first year. Last year we just used a ditch in her run, point her rear end down.
Even then Rock was on tippy toe:)
Becky
We once had a German Shepard that had puppies by my Chihuahua. I wish I could have witnessed that.