I have two female shih tzu dogs (both desexed now). They are both around 4yrs old and I have had them for about 2-3yrs. They originally started having dominance issues when they were both entire. I had them desexed about 8mths ago and have had virtually no problems since. About a month ago they started again and it is getting worse daily. I have absolutely no idea how to stop this behaviour and I'm at my wits end. I do not want to rehome one of them, but if I cant stop this, I'm afraid I will have to. I had a dog trainer come and help me last time they did this and it didnt really help. Both dogs are fairly obedient until they start at one another, then selective deafness creeps in, and they just dont respond. Can anyone help or suggest something ... I'm desperate!!