Giving our best friends more time
Wally
Tibetan Mastiff
Odin
Whoodle
We’re developing drugs intended to help dogs live longer, healthier lives.
By targeting the underlying causes of canine aging, we hope to prevent and delay the onset of many age-related diseases.
Discover our products Loyal is a clinical-stage veterinary medicine company.
Our work is backed by decades of research on the biology of aging. Our team of experts in dog health and longevity is dedicated to helping your dog live longer by expanding upon this research and developing better ways to quantify the aging process in dogs.
About us 
Wally
Tibetan Mastiff
Join the Loyal List
Sign up today for the latest news on product availability and enrolling your dog in our studies. You’ll also learn about dog aging and wellness from our team of veterinary experts.
Gambit
Lancashire Heeler
Join the Loyal team
We believe aging is one of the most impactful problems you can work on. We are building the best environment to tackle ambitious, challenging goals.
Gambit
Lancashire Heeler
In the news
March 10, 2023
This 30 Under 30 Alumna Is One Step Closer To Helping Your Dogs Live Longer
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February 3, 2023
More time with your pets? SF biotech company trying to create fountain of youth for dogs
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November 30, 2022
Biotech startup predicts age of dogs in hunt for clues about human aging
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August 15, 2022
These scientists are working to extend the lifespan of pet dogs – and their owners
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November 23, 2021
Founder-led biotech is making space for ideas– and diverse leaders– where it didn’t exist before
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July 6, 2021
Why this San Francisco anti-aging drug startup thinks it’s barking up the right tree
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May 26, 2021
How Silicon Valley is helping dogs live longer– so humans can live longer too
Read article 