http://www.purina.com/science/research/DogMoreYears.aspx
http://www.pennhip.org/09230v7.pdf
The above link is a study of 48 labs and the effect of how much they were fed and longevity.
Kelly and Amber
http://www.pennhip.org/09230v7.pdf
The above link is a study of 48 labs and the effect of how much they were fed and longevity.
Kelly and Amber