So as some of you know, we recently rescued a 1 1/2 year old Keeshond named Ari. We don't know much about his background, except that he came into the rescue as a stray. Overall he's pretty well behaved. We had to teach him about going to the bathroom outside, and overall he caught on fairly quickly. He's a very smart dog, he listens to our commands and corrections and is always waiting for our cues. However he does have one problem that I need advice on how to correct. He has a ton of energy, and whenever he gets really wound up he begins to growl at you and gets snippy. We remember this happening when Max was about that age, but it wasn't this bad. I'm not sure if its aggressive behavior or just playing. I'll try to get a video of it if it would help. Any advice is appreciated!