I looked it up and it's only done on puppies 3-10 months old. It says it's 99.6% effective when done properly. It does actually cause their testicles to shrink up and makes them sterile. However, it does not prevent them from making testosterone so that's a down side to it. They will still perform all their manly duties like marking, etc. and they will still be very prone to testosterone related diseases. So maybe not such a good thing.
Pebbles the wonder dog on Dec 20 at 09:41 PM