Spiked and studded dog-collars derive from the days of the Ancient Greeks, who would give their sheep-dogs sharply spiked collars to protect their necks from wolves whilst they watched over a Sheppard's flock at night.

The best-value consumer purchase in terms of the price and usage is an electric kettle.

It can take up to a month for a rattlesnake to re-supply its venom.

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