I am not a horse-lover particularly, but two songs have always made me choke: One is Eric Bogle's "As if he knows", already posted above. The other (and one of my all-time favourite songs) is the traditional - collected by Jim Eldon at Appleby Fair)"Poor old horse":

POOR OLD HORSE (trad)

Once he was a young horse, he was a young horse in his prime;
his master used to ride him, and he thought him very fine.

(chorus)But he's still my own,
bonny sweet, who rode so many's the mile;
over hedges, ditches, brooks and bridges, gates
and cleared many a stile.
Poor old horse, poor old horse, oh cherry old grye.

(now) His legs and his irons have all gone to decay;
likewise his poor old body, it's all withered away.

Once he wore the clothing of the lindsay oh so fine;
and his eyes they would sparkle, and his mane it did shine.

Now out from the warm stable to the fields he has to go;
let it rain, hail, or sun shine, or the winds blow high and low.

(oh) He's stealing all my hay now, and spoiling all my corn,
He's eating up the long grass that grows against the wall.

I should beat him, whip him, cut him, to the huntsmen let him go.
Give his body to the fox dogs, that's the best that I can do