Our dog male) was ont eh lead and along came somewith a doberman (also on a lead, also male) and my dog started growlign and pulling at lead. Anyway he broke the lead and him and this other dog started fighting. I was busy concentrating on getting ym dog back, and he did, after 2/3 shouts of his name, come away and come back to me.As I was calling him and trying to get lead back on him, other owner said "make sure he doesn't glaze over"
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What did he mean by glaze over? and why would the dog perhaps do it