A cake suitable for a horse can be made using ingredients that are safe for horses to consume. … The cakes also include sugar and sweet treats, which makes them tasty but means that these cakes should only be served as a treat, on a special occasion such as the horse’s birthday.
The most common acute toxins that kill horses in a few hours to 36 hours include:
Several plants, including nightshade, become more toxic as they wilt and die, posing a danger to horses eating dried hay or plant matter blown into their pastures. … Hungry or thirsty horses are more likely to eat poisonous plants, as are those pastured on overgrazed lands.
The edible grasses excellent for human consumption are generally cereal grain grasses, for example wheat grass, barley grass, alfalfa grass, as well as oat grass. Wheat grass is regarded as the common type of edible grass.