Dogs and humans are more alike than we thought, study finds

Live updates

1. 2h ago

   Dogs and humans share more aging biology than known—new study

   Dogs and humans exhibit overlapping biological signals tied to aging, suggesting shared mechanisms that could speed up drug development for both species. A senior dog’s role in dementia research underscores practical applications. Dogs’ emotional bonds with humans have been quantified using psychological tests adapted from infant studies. New evidence also shows dogs’ eyes may have evolved to appeal to humans.

   What's confirmed:

   • Dogs and humans share biological signals tied to lifespan, indicating common aging mechanisms that could accelerate drug trials for both species.
   • A senior dog is being used in dementia research, demonstrating real-world applications of shared biological signals between dogs and humans.
   • Dogs’ emotional bonds with humans have been measured using psychological tests adapted from studies originally designed for human infants.
   • Dogs’ eyes may have evolved to appeal to humans, reinforcing their emotional and behavioral connection.
   confidence 92%
2. 8h ago

   Study confirms dogs share key aging signals with humans, boosting anti-aging research

   New research from the Dog Aging Project shows dogs and humans share biological signals tied to lifespan, suggesting common aging mechanisms. This could accelerate drug trials for both species. A senior dog’s role in dementia research highlights real-world applications. Experts also note dogs’ deep emotional bonds with humans, measured using psychological tests adapted from infant studies.

   What's confirmed:

   • Researchers found dogs and humans share biological signals linked to lifespan, indicating common aging mechanisms that could inform anti-aging treatments.
   • The Dog Aging Project’s work has led to early-stage drug trials targeting canine aging, with potential cross-species applications.
   • A senior dog with dementia contributed to aging research before passing, demonstrating practical applications of comparative studies.
   • Scientists adapted the Strange Situation Test—originally used for human infants—to measure emotional attachment in dogs, revealing parallels in bonding behaviors.

   Still unconfirmed:

   • Dogs may understand human emotions and communication more deeply than previously assumed, though this claim lacks direct scientific validation beyond anecdotal observations.
   confidence 88%
3. 13h ago

   Dogs share human-like metabolic signals linked to lifespan, study reveals

   Researchers have found striking similarities in how metabolic patterns influence aging and lifespan between dogs and humans. These findings, from the Dog Aging Project, could accelerate understanding of aging in both species. The study highlights shared biological signals tied to longevity, offering potential insights for future anti-aging treatments. Trials for new drugs targeting canine aging are already underway.

   What's confirmed:

   • The same biological signals—specifically patterns of metabolites—associated with lifespan in humans also appear in dogs, according to the Dog Aging Project.
   • Metabolite patterns linked to earlier or later death in dogs mirror those observed in human aging studies, as detailed in *The Journals of Gerontology*.
   • Genetic and metabolic similarities between dogs and humans in aging suggest potential cross-species insights for extending healthy lifespans.
   • Trials are currently underway to test new anti-aging drugs in dogs, with preliminary research indicating potential lifespan extension.

   Still unconfirmed:

   • A senior dog with dementia contributed to aging research by participating in a study on cognitive decline, though specifics of its findings remain limited.
   confidence 98%