Will dogs ever be able to live longer?
Scientists have found that although dogs don't live as long as we do, their life expectancy (how long they live) has doubled in the last 40 years.
Maybe one day in the future our dogs will live as long as we do.
A scientist named Joao Pedro de Magalhaes says that in 1,000 years' time, a dog could live for 300 years.
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