Riddick who is now 11 months not neutered yet breeders request to wait has very odd behavior/aggression I got him when he was 4 months and he has always been a little fearful of new things/strangers but my other dogs have majorly helped with this. He has weird behavior he was completely cuddled up and allowing my younger sister to pet him but when she got up off the couch he started growling at her. Then I had all the dogs in the back of my SUV and my dad got in the back to sit down and he started to growl at him and then proceed to try and bite but as soon as we got out of the car they where best friends and playing. He also growled and jumped at a little kid. He defiantly has less fear when he's with the other dogs meeting strangers. He is very fearful of my moms house and acts very skittish he will growl at her. I'm not sure what the issue is its almost like he is bi polar? Any help would be great I don't want these issues to worsen down the road. I almost wonder if he doesn't like people eye to eye with him or at his eye level unless he really knows them.