your dog isa messed up in the head
No, because this would mean that the dog would still be able to sire young.
Yes, I think he can get a female dog pregnant with 1 testicle.
As long as he has one fully functioning testicle, yes, you can have kids. Take Lance Armstrong for example. He has several kids and he lost one testicle to testicualr cancer.
A testis, especially one contained within a scrotum.
Take the dog to a vet, they could tell you.
Yes, as long as the testicle is functioning properly then you can reproduce with one testicle.
Yes, he has only one testicle.
yes you can (I did)
Can a man with one testicle breed? The answer is YES
No, one testicle always hangs lower than the other. That's normal.
Your dog should be examined by your veterinarian. There is no way to diagnose your dog over the Internet.
All male dogs have two testicles. In some dogs however, only one testicle forms and at times there are two but only one has descended into the scrotum. To be sure what is going on with a male dog which appears to have only one testicle, have it checked by a veterinarian.