Dr. David J. Waters with "Two Lane," one of the oldest female Rottweilers living in North America (IMAGE)

Gerald P. Murphy Cancer Foundation

Dr. David J. Waters with "Two Lane," one of the oldest female Rottweilers living in North America

Caption

Lead investigator Dr. David J. Waters, DVM, PhD is pictured with "Two Lane," one of the oldest female Rottweilers living in North America, that investigators put to work to explore the possible trade-off between maternal investment in reproduction and likelihood of later-in-life frailty.

Credit

Center for Exceptional Longevity Studies, Gerald P. Murphy Cancer Foundation

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