people breed weird dogs under the name 'tsang khyi'.. i dunno how authentic the term is.. however, having 2 male n dominant dog is a serious matter and you should monitor them well.. and about stray dogs, i have been with stray dogs and i have been interacting with them since my early childhood. whenever i used to go out to play, around 10-13 dogs would follow me. and i can assure you that when you are with your dog, no dog actually attacks your dog practically.. or even, under strange and rare circumstances, if you scare it away, it won;t trouble you again..