Right, but dogs are nevertheless somewhat discriminating. When a kid, I fed my dog on butcher's off-cuts which I'd get for free. Usually they'd be meaty and fre

Right, but dogs are nevertheless somewhat discriminating. When a kid, I fed my dog on butcher's off-cuts which I'd get for free. Usually they'd be meaty and fresh enough for us humans to eat (but we never had need and ate better). Occasionally, the butcher gave me meat that whilst not 'off' was a little stale and had a trace of smell about it and my dogs noticed the fact. They'd eat it with reluctance and or only when very hungry. A quick and almost miraculous solution was to pour boiling water over the meat which would turn its outside grey or brownish (it being still raw in the middle). The dogs would then instantly eat it, in fact I had to be careful to let it cool down so they wouldn't scold themselves.