The dog from "Les aigües"

This morning we went to walk to the road of Les Aigues, in Colserolla (the mountain behind Barcelona).
It is a typical walk that we usually do, not only because the exercise, but also because it has the must extraordinary views over the city.
This morning was a particularly beautiful day because we had had some days of strong winds that have cleared the air of smog.
I took lots of views of the city and I was thinking to blip one of them.
But finally I chose the photo of this Greyhound dog that accompanied us in part of the trip, running like a bullet from one extreme of the road to another, looking to play with us or anyone found in his path.