btirish bulldog

Question
We have a 9 month old british bulldog and just realised that one of his testicles are up, we have taken him to our vet who has said that it wont drop and that she would recommend castrating him, although she is in favour of doing this anyway with male dogs. It is not something that we wanted to consider especially as we wanted to stud him, although he is not the ideal stud dog with this problem, would it still be possible for him to produce pups with his mating partner?, also does he really need to be catrated?

Answer
Any dog that doesn't have both testicles down by nine months old needs to be castrated. You should never breed a dog like this as it can cause sterility, cancers, prostate inflammation, all kinds of problems in the dog with the undescended testicle and he will pass it on to his progeny. These dogs are considered pet quality only.

Dog should only be bred if they are show quality and have been shown and won. Any other dog isn't of the right quality to keep the breed pure. I am not a show dog fan but I understand the rules and the whys and under those rules your dog wouldn't even be allow to show.

So your vet is correct. Dogs that are not castrated and have undescended testicles are usually more aggressive and have a lot of medical problems that result from this. We have had a really viscous dogs come in that were supposedly neutered and when we found that that he wasn't (double undescended),  we neutered him the dog was the became the sweetest dog around.
So it is very advisable to get this done as soon as you can. If you paid money for a show quality dog then you need to let the breeder of this dog know that her dogs are throwing off dogs with this condition.