They even look spectacularly similar on the outside unlike some of our other close relatives (e.g. chickens and dinosaurs).
Dreaming of a dead pony usually means that you are losing a piece of your childhood. Ponies are small horses and they are known for being an object of affection to all children male and female, (but mostly female). If you see a dead one in your dreams it means that you are losing your childhood. Sometimes this just can’t be helped. The pony is the quintessential pet that everyone wants but nobody can afford. It is the goal of every child just about, to have one before they grow into adulthood because by the time they reach adulthood they will no longer have that desire to have a pony anymore. To see a dead one means that your childhood passed you by before you could get everything that you wanted out of it.
Dreaming of a dead horse hearkens back to your own childhood. A horse is known as a symbol of majesty and also a symbol of desire. When you are a child you want a horse. Even though this is a stereotype usually associated with female children, you probably wanted one as a child too if you were a boy. To see that horse being dead, you are realizing how much you have grown up and that it is time to put away childish things and move on with your life.
If you have a dream in which you see dying horses it means that your sense of majesty and your appreciation of beauty are dying. Horses are known for representing a paragon of beauty and of loveliness and if you have a dream in which you see dying horses it means that you are losing your appreciation of the beauty in life.