Runs wild in dreams

I noticed the old horse and stopped along the road
He came to the fence when he saw me, breathing whispers in the cold
As he neared, he stumbled in the mud,
Knees buckling, then righting themselves.

Does he dream of roaming free, running through fields,
Lungs full of the scent of wildflowers, splashing through creeks,
Sunrise at his back?
I do.