unneutured male vs neutured male

Question
Hi, my 9 year old uneutured male keeps humping my 1 year old neutured male. i had my puppy neutured at 6.1/2 months due to him humping all the time he has stopped now and is very settled but my 9 year old uneutured dog over the last 2/3 weeks had started humping my 1 year old at every oppurtunity!! i feel it is sexuall as he whines if a crate my other dog on a nite and humps the crate if i were to let him out he instantly grips him and starts humping him so i tell him no he then gets his bed and starts at that to the point he ejaculates hes has never been like this before and he keeps makeing his privets bleed and gets his skin stuck back... its getting me down and making me resent him... what can i do ??
thankyou very much claire

Answer
I see no reason to keep an intact 9 year old.  He is too old to be used as a stud.  Responsible breeder neuter their studs when they retire them.  It could go a long ways to solve the problem.  

Better leadership on your part would help too.  If you are number 1, he doesn't have to discipline the puppy.  The key to most behavior problems is approaching things using the dog's natural instincts. Dogs see all the people and dogs in the household as a pack with each having their own rank in the pack and a top dog. Life is much easier if the 2 legged pack members outrank the 4 legged ones. You can learn to play the role of top dog by reading some books or going to a good obedience class. A good obedience class or book is about you being top dog, not about rewarding standard commands with a treat.