
I had someone visit me to mate their bitch, and my male had problems. I suggested the bitch could possibly have a stricture (but I didn't charge.)
The owner left and waited for the next season, taking her elsewhere to be mated. Her bitch was eventually mated but was unable to give birth, and needed an emergency section. Years ago I had a bitch with a stricture and I had her spayed, as I didn't want this bred into my lines.