menthess ha contestado a tu set de fotos: I think that The Hound Helmet is a Dogo…
I always imagine Sadnor as a leonberg dog
Well Sandor can be that kind of dog (yes I see him also kind of fluffy). The leonberg is connected with the mastiff (many others see Sandor as a mastiff, I like to imagine him as a Great Dane).
However I was wondering which dog is his helmet based on. I couldn´t find it by googling it.