If he eats enough of it, its possible. If you suspect your horse has been poisened call your vet ASAP.
grass & hay
it eats grass or humans give it to them
mainly hay or grass
the humans sometimes eat/kill the wolf and the bear. the wolf and the bear, if successful, eats the horse, but mainly the weak and/or old ones. the horse eats grass, dead grass, and bushes.(: hope this helps!
Horse fodder is basically the food a horse eats. Hay, chaff, grass.
A quarter horse eats what every other horse does, it eats hay, grain, sweet feed, grass, apples, sugar cubes, carrots, etc.
donkey eats & horse mainly eats grass & hay .
A wild horse mostly eats grass ,hay and berries.
A horse eats grass or hay and no animals.
Yyes, a horse is a herbivore it eats hay, grass, oats, carrots, etc.
The American saddlebred horse eats what any other horse eats. hay, grass and grain. they aren't any different then a normal horse.
Przewalski's Horse eats grass in its habitat. By doing this it can maintain grass populations and fertilizes the soil with its excrement.