Grimshaw's dog Rambo was a real character. A thick-set Staffy, he had a skull about an inch thick as he regularly couldn't stop himself on the polished wooden floors and slid head first into the wall. The poor thing was also hit by a car at one point; he bounced off and appeared almost totally uninjured!
Roger Martin also had the most unkempt English Sheepdog ever: Etheldreda, as mentioned above. It stank but was a faithful old thing that never seemed to leave his side. When she eventually passed away she was replaced by a black labrador called Bramble who seemed way too energetic for him!
Tim Alexander had two enormous dogs (can't remember what type, but they were almost Irish Wolfhound size) called Tara and Shanna. Tara disappeared after about 6 weeks - don't know if he found the two of them too much to handle or whether something more sinister happended but all of a sudden there was only Shanna, who was amazingly good natured.
And of course Rev Dobbie's hound, the mad Springer Spaniel called Hugo. Extremely friendly with everyone and everything