Thanks for that. Unfortunately those are the roots which do not have any diagnostic characters, the biting surface is at the other end. There should be a pattern of curved lines which will help us to pin down the genus or species.
I would say that's a molar tooth from a sheep or goat. It isn't a fossil, but we have no way of knowing exactly how old it is. Bovid teeth are a very common find in the UK, and I expect the same is true for Spain.