I had a male beagle and two toddler boys. He had always been hostile to my husband but never to my kids he loved them more than himself. Anyway when we got him we didnt have him fixed because we felt no reason to. I came home one day and found my pooch humping (yes humping with an erecetion and all) my three year ols son who was lying underneathe him laughing. I instantly took him off and took my kids into the other room. I asked my oldest son if this had happened before and he said it happened everytime they played with him. Neutering yes or yes?
My male dog is 2 & was neutered just before we got him almost a year ago & has never had issues.
Now my female dog we use to have... we got her at 6 months & she was spayed & humped one specific stuffed animal! Sadly it was a tiger my brother had gotten for my newborn son 3 years after we got her (the dog)!