Who's Snoozing in My Front Yard

Lately we've been shutting our front gate and letting the horses graze in the yard a bit.  I enjoy having Phoenix close and petting him before hopping in the car or on the way out to the garden.  The other day I looked out the window and saw this:

Look at him sacked out in the front yard.  He never used to lay down during the day, but now he's an old man, snoozing away.

 His lips were twitching as I took this picture.  Little puffy snores came whistling out of his nose.  I wonder what he was dreaming?  Was he dreaming of the parades I rode him in when we lived in Texas?  Galloping through bluebonnets?  That time a few months after I'd just gotten him when he dumped me in the gravel pits and bruised two of my ribs?  Or perhaps his dreams are of more recent times, like when the neighbor's dog was chasing him in the pasture last week.

Harriet says, Go on now, leave him alone!  Can't you see my friend is trying to take his midday nap?