Bryan Johnson tackled human longevity. Now he wants dogs to live forever.

Bryan Johnson, a tech entrepreneur known for his mission to help humans live forever, has now turned his attention to canine longevity. Johnson recently adopted a Belgian Malinois named Katara to protect him from attackers, sparking his interest in extending dogs' lives. The two bonded quickly, with Johnson describing Katara as his guard dog and constant companion.

Johnson plans to put Katara through the same rigorous data collection and interventions he subjects himself to, making her the most measured dog in the world. Dogs have around a 24% lower risk of dying early compared to owners, prompting Johnson to consider what he can do to improve his dog's health. He believes that food could be a relatively straightforward way to enhance dogs' health, as commercial dog food often contains harmful compounds that negatively impact their bodies.

Johnson notes that dogs and humans share many similarities, making advancements in canine health potentially beneficial for humans. Several startups are already working on extending dogs' lifespans, with some focusing on developing FDA-approved longevity drugs and others exploring gene-therapy approaches targeting chronic age-related diseases in animals.

Johnson expects it to be relatively easy to convince people to prioritize their pets' well-being over their own, as many already do for their dogs.