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3 dogs (cocker-spaniel, dalmatian and border collie)live in our house together, and are trained to answer to their names and accept tit-bits gently to their names. Problem was, a new toy was introduced into the 'pack', with no named recipient. Hence the dog-fight.
I thought the spaniel was dead (bleeding, floppy, not breathing, eyes closed, but recovered a heart-beat when I picked her up and took her outside for air). I now think my picking her up and holding her tightly put fortuitous pressure on her chest/cardio-vascular system - I probably should have pumped her chest when on the floor (without mouth-to mouth, thank you!). I think she either feinted or had a minor cardiac arrest, but she is fine today (though will have to watch the lesions for sepsis). The silly spaniel appears no more brainless than before.