Labrador retrievers are well known most for their insatiable appetites - but it may all be genetic.
UK-based researchers have found the scientific reason why the breed is obsessed with food and perhaps leads to their weight gain.
They found a fault in a gene known to switch off hunger, which tips the scales towards a 2kg gain in some Labradors, unlike dogs that don't have it.
It's also thought that this is why Labradors make such good service dogs because they are naturally more food driven and therefore easier to train.
Dr Elsa Flint is an animal behaviour expert and runs Animals with Attitude.
She talks to Paul Brennan about Labs and their endless appetites.
And here are some images of unsuitable labs sent by our listeners:
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