I don't know, I wasn't there when Sergio made the picture.
It must be a dog but in those particular places you never can tell for sure what you see. Especially if you go there with a strong will to "see" and a clear mind.
Don't forget the stone in the picture it's called "the witches stone"...
Anyway, listen rockartwolf I wanna thank you for your pictures. I love most of them. You really got the best of sites over there and you really make the best of pics out of it.
Ehi rockart-wolf (I'm joking) can't you recognize a wolf in a picture?