The dark horse was beautiful.
I walked around the horse's stable.
longshot, dark horse
My horse trainer counted my horse's strides.
I mucked out the horse's stall.
It is describing the horse. It is a drinking horse. The verb in that sentence is the word "is".
the horse neighed pleasantly
"As i went outside to take out the trash, everything was dark."
the cat was spritely in the dark
You will maim that horse if you keep whipping it.
I saw a herd of horse in the barn
The horse loped along gently.
It looks to be a pale horse...You look pale.