We waited but Lynyrd, our new Airdale Terrier started showing signs of being aggressive. So, the vet recommended he come in and get "fixed". As you know, dogs generally wear a lampshade or funnel cone afterwards to prevent them from irritating the incision. I decided I was going to jump in and make him feel a little more comfortable. He wasn't having it. I think he got po'd that I was making fun of him!! LOL.
(Taken on my iPhone w/service from T-Mobile)