I have found a few articles on the net talking about growth plate closure and neutering. It all seems to go back to a study they did in 1991 where they showed that dogs neutered at 7 weeks were taller than dogs neutered at 7 months and those dogs were slightly taller than those neutered after a year . It does seem that most articles and evidence touts early neuter meaning BEFORE PUBERTY ( pediatric neutering 7 wks - 5/6 months ) . They say that if you neuter before puberty these dogs will be taller . I cant find anything stating how much the long bones will continue to grow if a dog is neutered AFTER puberty starts .......or in my case 8-9 months.It does seem that if a dog is neutered at this age they MIGHT be slightly taller but not as tall or leggy as if a he was neutered before his puberty had started ....... but i cant find much about neutering at this time ?? I would think that the longer you wait the less leggier they will be ......but if we are only talking a fraction of a inch ....is it really worth the wait ?? ( I am talking of neutering Colby at 9 months instead of 12-14 months ) I am wondering if there will be THAT much difference ???