My 10 week old shar pei attacks my other dog?

i just bought home a 10 week old female shar pei and i also have a 11 month old labordoodle and the new dog seems to be always going after my other dog, im not sure if they are playing or fighting theres no crying or blood just alot of teeth and snarls or maybe its growling and the pretty much wrestle each other. they are both female so im not sure if thats the problem we bough my shar pei from petland petstore, please help, dont know if i should break it up or let them figure i out and learn how to get along with eaCH OTHER?