Hey guys i have a question one of my puppies has big testicles and he is only 3 1/2 weeks old. His brothers you can barely see and it seems like they are growing. I'm just worried there is something wrong. And wanted your advice on wether i should take him on to the vet or just wait till they go for their 6 week check up. He don't act like they hurt or anything. Please help worried..............