No, not normally. Horses are herbivores and eat only plant matter. However they are also very curious and may pick up and 'taste' or play with a dead animal such as a squirrel. If the horse ingests the dead animal call your equine veterinarian immediately as this can make the horse very sick.
Squirrels, horses and rabbits
no
ground squirrels do
squirrels eat nuts, foxes eat squirrels
Yes! Tree squirrels eat peppers
no Squirrels eat plants and nuts.
Squirrels will sometimes eat insects, but only when they are very hungry.
Deer are herbivores, so they eat only plants, not squirrels
No prairie dogs do not eat ground squirrels.
yes, squirrels use their hands and teeth to eat.
Squirrels do not eat frogs in particulair. They eat plant matter like nuts in general, but squirrels also eat small animals and even vertebrates. So they might eat a frog ocassionally.
It appears that squirrels do eat rhubarb! Leaves and will pull off stalks and eat them.