The best way to split up a dog fight is to grab a large bucket or other container of water and dump it right on their faces. The growling results in snorting causing them to inhale water and they will back off each other.
Kicking, especially from behind, will cause fear in the dog, which is often more deadly than their rage.
Pulling their back legs won't work if the dog is stronger than the human pulling (as an akita often is) and could result in worse injuries from tearing teeth out of the flesh in which they are imbedded.
The minute it takes to get the water is worth it- I've seen it work once between adult male Boxers, and once between a pitbull/St. Bernard fight.
Originally Posted by Jensjustduckie
I find that kicking works much better than putting my hands in the fight. We had a female Siberian Husky and a male Lab mix for 10 years that had a few really good brawls (the Husky was the alpha but only weighed in at 40lbs compared to the Lab mix at 85).
No hands!! You need them more than your ankles!