My golden retriever male dog, one year old, found that his balls were getting bigger and bigger and he fell badly. I don't know if this situation is normal. It's not too late to castrate him.

Your dog should have a hernia. Hernia is due to congenital hypoplasia of peritoneum or acquired reasons, and the intestine falls into the scrotum. The scrotum will become bigger after the first exercise, and will slowly retract after the rest. In the later stage, if the wound is getting bigger and bigger and the intestine cannot recover, it may lead to local intestinal necrosis due to poor blood circulation. Hernia operation is a minor operation. I wonder if it can be done together with ligation. Let's go to the hospital and ask whether to castrate the dog or not. It's best not to let dogs do strenuous exercise recently. If the scrotum is too big after exercise, you can help it slowly rub back some intestines that have fallen in.