I have a 6-7 month old Silky or Yorkie...I was told that she was a Yorkie, but now not sure. She has very thin hair. She has just gone into her first heat. I also have 2 other dogs and 2 cats. For some reason she has started fighting with my 6 yr old chihuahua. They never fought like this before. They are both in heat at the same time. Could this be the reason they are fighting?? HELP!!
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