Poems in a way are spells against death. They are milestones, to see where you were then from where you are now. To perpetuate your feelings, to establish them. If you have in any way touched the central heart of mankind's feelings, you'll survive.
If it's true that men are such beasts, this must account for the fact that most women are animal lovers.
Now being upon the haunches (as he necessarily must be in this case) is it impossible but he must be light in hand, because no horse can be rightly upon his haunches without being so.