Labradors are known for being greedy dogs, but now scientists have come up with a theory about the genetic factors that may be behind their behavior. Science correspondent, and Labrador owner, Nicola Davis, visits the University of Cambridge to meet Dr Eleanor Raffan and Prof Giles Yeo to find out how understanding this pathway can help us better understand and tackle the human obesity crisis treat.
How to listen to podcasts: everything you need to know
