Hardwired to eat: what can our dogs teach us about obesity?

Labradors are known for being greedy dogs, and now scientists have
come up with a theory about the genetic factors that might be
behind their behaviour. Science correspondent and flat-coated
retriever owner Nicola Davis visits Cambridge University to meet Dr
Eleanor Raffan and Prof Giles Yeo to find out how understanding
this pathway could help us treat the obesity crisis in humans. Help
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