The horses are growing wings and human merge with animals as symbols of teaching, hope and empowerment.
Now everything in our physical existance is already simply a thought made manifest. And everything has been created with an emotion governing the creation, which then already give a certain symbolism and deeper meaning to everything that is created. Thus all creation is an example of the spiritual and emotionla state, a reflector, of the creating force behind it. We can find the level of intelligence behind any creation and so all physicality is a symbol of the our creative state of being. Everything is symbolic.