Photographer Pete Thorne has created a wonderful series of portraits of elderly dogs, entitled OId Faithful.
On his Facebook page, Thorne, who is based in Toronto, Canada, said he's shooting the pictures for a potential book and gallery show.
The project has generated considerable interest, with numerous owners getting in touch with him every day asking for their pet to be included.
Below are 16 of the dogs who have been photographed for the series so far, along with descriptions of some of them from Thorne's Facebook page.