Share 'Aggression towards un-neutered males'

Our lab-mix pup Cooper (approx. 1 year 10 mos. old) seems to have a significant problem with other male dogs that are not neutered. Cooper was adopted at approx. 4 mos. of age from an animal shelter in Oklahoma City. He has been neutered and is extremely well behaved, with exception to the subject problem. He knows and responds to various commands/tricks, has had obedience training and some agili…