I'll swap any of your dogs for mine...
He has elbow dysplasia, had surgery for that which required surgery at an orthopaedic specialists, weeks of crate rest and then even longer just resting...then longterm Metacam.
After all that he wasn't hugely well socialised with other dogs, so I took him to a behaviourist to work on it, he completely out of the blue tried to attack her...after referral to another specialist it turns out he has a spinal problem which can be managed with painkillers, but it took so long to find the right combination that he now has to be on lead and muzzled when out and kennelled when we have visitors because he thinks dogs and strangers were causing the back pain.
Then the Metacam gave him an ulcer, the symptoms were masked by his other painkillers, it perforated, he had to have emergency surgery from yet another lot of specialists where they gave him just over 50/50 odds if it went well, it didn't, they had to remove part of his stomach and duodenum and he has a scar running along most of the underside of his body.
This was all before his second birthday...I used all his insurance last year, plus £200 in excesses and £500 that went over and his premiums are now £110, but his drugs cost so much that it's not worth cancelling.
Oh yes, he also had food intolerances which I thought we'd cracked but he's now getting problems with his ears that might be to do with that.
He's still a bit hit or miss with other dogs outside and will randomly decide he doesn't like the look of someone walking towards us. (Though thank god, he is improving)
He steals anything he can get hold of that's made of metal or plastic, he will drop and leave, but I can't get him to stop wanting to take them in the first place.
He's eaten all the plants in my garden, even though he's supervised, he just did it more slowly than if no-one was watching.
He broke my DP's tooth, they were playing, DP bent down, the dog looked up at the same time and hit DP in the face with his concrete head breaking a front tooth.
Last week he had a go at the vet because it wasn't the one he knows, he gave her his paw...then objected to the fact that she had the paw that's on his sore leg 
He's twice pulled down my trousers trying to get to another dog, in public...
Anyone want to swap? Lol
He has good points, he's lovely when he's not doing any of those things I've just mentioned and, um , he picks up tricks easily...