So when my 2 dogs play (my husky and my pit bull) my husky (blizzard) flairs up his hair into a little Mohawk. They are not aggressive towards each other in the littlest bit. Both of their tails are wagging, and the second they finish playing his hair goes down back to normal. Is it just something huskies do when they get excited ? You can kind of see it in the first pic and then the second pic was 2 mins after and he had his hair down.

Yep, you got it. It's excitement and totally normal. I let mine carry on a while like this but usually go ahead and settle them for a bit. Excitement isn't a bad thing but prolonged excitement can get out of hand sometimes. Most dogs though will set their own limit.

With three dogs and one, Avalanche, who is my perpetual puppy and wants to play constantly, like Jenn, I have to put my foot down after a while - "okay, enough!" normally stops it. My newest, sky, also like to get in there an rough house so sometimes it takes a couple of "Okay, enough!" to get their attention.

Oh, and the mohawk - yep, common on both Sky and Avalanche. It's odd that with Avalanche who's my watch dog that when he sees something he doesn't like it's the entire ruff (fur around his neck) that comes up and when it's play time it's that strip down his back ...