How old are the pups and how long ago did they get it? I assume they have been treated and the breeder will wait for the all clear before they go...
I wouldn't be in the least concerned about their weight/size, but much more so on their body condition. Google body condition scoring and check...
I can't advise, but please please let his breeder know about these issues, or they will continue to breed these poor dogs with genetic issues x I...
How is his self control in general? Does he have a solid sit? ie can you ask him to sit and put a full roast dinner on the floor without him...
Have you considered residential training? It would need to be in the house rather than kennel. Or could you ask your trainer to come to the house...
I have 5 boys and 5 girls. I find the boys much much easier to train. Much less complicated. As the boys are all entire and are used to living...
If the vet has ruled out any medical issues, then I would go back to basics and treat him like the 8 week old puppy you brought home; take him out...
So the only time she is around other dogs is when she is allowed to run riot with them? It seems as though she thinks that other dogs are the...
Is he doing this at home when you want to go somewhere, or when you are out and ready to come home?
It will be very confusing for him if you are using puppy pads inside the house. Either you want him to toilet inside, or you want him to toilet...
Why do you feel the need for him to play with other dogs? Personally, I prefer a dog who will happily ignore other dogs, than one who sees another...
It's not as simple as this. Even dogs of the same weight, doing the same amount of work, can have very different needs. I have 2 labs at 25kg...
Would you consider trying him on a raw diet? It's an easy way to see if his issues are diet related. I used to have a boy with terrible digestive...
I would certainly listen to your vet. Get a behaviourist as soon as possible before someone gets bitten. In the meantime, definitely muzzle train...
I assume that you don't walk her off lead when she's in season?
You could probably do with 'proofing' his sit. Generally if you teach them a solid sit with increasing duration and distractions, they will learn...
Could you just give him half his te, then use the other half to do some calm training?
I don't tend to walk puppies as such. I tend to drive somewhere to have a sit and let them watch the world go by. I like market squares as they...
Out of interest, what was his size like compared to the rest of the litter?
I wouldn't worry too much. He's lovely and I assume you do not plan on showing/breeding him so it won't be a problem. Is he KC registered?