Too many lads keep them banged up single from pups and dont get them out enough.When I kept bull crosses,Black terriers and even an apbt I could have them all mixing like that even with liþers of pups mixing with them.Couldn't be doing with dogs wanting to scrap with their kennel mates.Only time I had any bother was when my Mrs got 2 showey Russell/White lakey types.Even then it would usually be one of the cowardly c**ts bashing a pup for no reason.