Doggie help needed!

Since I can hardly tell a bulldog from a greyhound, I'm asking people better versed in dog lore: what kind of breed are the two dogs Martin Freeman and Amanda Abbignton are holding on this photo?

I'm working on a story in which John Watson and Mary Morstan meet in an animal shelter for the first time, to find themselves a dog (each), and I thought it would be fun to give them the breed they actually have, but I haven't got a clue what kind of doggies these are.

(I didn't manage to make the photo appear in this entry. Clearly, I'm a klutz. Sorry.)