Don't you love those big teeth that they show off and didn't it scare the heck out of you the first time you saw them play like that!?!?!?!?
Great pictures all. These are my littermate brothers, Sam (red) and Spike (black).
The day that Sam and Spike were reunited after a 30 day separation (we adopted Sam first then went back to adopt his brother when it was obvious he needed a dog friend):
A few months later, not really fighting, but sharing their bone:
As adult dogs, still play fighting:
And my all time favorite. Yes, my DH jumps into the fray and play fights with them. The funny thing is that they never ever come close to touching him with their teeth. They make a point of only nipping each other. You can see Sam almost smiling he is so happy that DH has joined in on their fun.