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

Labradors are known for being greedy dogs, but now scientists have come up with a theory about the genetic factors that might be behind their behaviour. Science correspondent, and labrador 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 better understand, and treat, the obesity crisis in humans.. Help support our independent journalism at theguardian.com/sciencepod