
It's summat to do with different diet these days combined with better healthcare for dogs.
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Thu 8 May 2008, 23:29,
archived)

Something about putting chalk in dog food...
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Thu 8 May 2008, 23:31,
archived)

but i heard it's because vets are advising against giving dogs bones, so less calcium in the diet
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Thu 8 May 2008, 23:37,
archived)

And we were all wrong! Blimey...
snopes4.notlong.com
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Thu 8 May 2008, 23:50,
archived)
snopes4.notlong.com