I agree with you Neil but it's pretty plain to see that he's behind the terrier thus blocking off any escape route.
Personally i like taking photos and looking back on them from time to time and remembering good days/dogs etc. I dont put them on the WWW for all to see, I'll sometimes send one or two to my close mates otherwise thats it and i see no harm in it. No good terrierman is going to get the camera out if there's more pressing issues at hand but if everythings calm and your happy the dog and quarry are safe then IMO there's no problem.