fighting dogs

Every time my dog and my sister's dogs get together, they aggravate the crap out of each other!  They bark, jump, growl, and bite each other and run around the house.  It's quite annoying hearing them fight and them getting in your way all the time, but it's pretty entertaining to watch.  The funniest thing is, it's the little dog that beats up the big dog!  I sometimes get concerned they are going to kill each other, but I know they are just playing... even though they are really, totally mean to each other.  

I got this moment in the middle of their fighting. I love the look on the little dog's face: he looks so mean!!