What plant in Spain do Mustangs eat?

Question

I need to study a plant that mustangs eat which grows in Spain.

Answer 1

Grass.

Answer 2

If you mean wild horses...just like anywhere they eat grass.  Also eat forbs (broadleafed not woody plants.  Most of the weeds in the U.S. came from Europe, so there are probably dandilions there for them to eat.