Here's a collection for those who feel a kinship with the critters.
A Farmer's Boy
They strolled down the lane together,
The sky was studded with stars--
They reached the gate in silence
And he lifted down the bars--
She neither smiled nor thanked him
Because she knew not how;
For he was just a farmer's boy
And she was a jersey cow.
from A Child's Treasury of Animal Verse, compiled by Mark Daniel. Dial Books for Young Readers, 1989.