Overview
- The peer-reviewed study published in June 2026 analyzed 3,754 data points from MRI scans, blood chemistry, disease patterns and behavioural milestones across humans, cats and other mammals.
- MRI results showed age-related brain atrophy and ventricular enlargement in cats that mirror changes seen in aging human brains.
- The research team built a biological age-alignment model that maps cat to human ages and found that a mid-teens cat corresponds roughly to an 80-year-old human.
- Authors highlight rising clinical access to advanced brain imaging for pet cats and call for veterinary–human collaboration to use real-world clinical and owner-reported data for translational studies.
- The paper urges creation of large veterinary health databases, arguing that companion animals overcome limits of lab models like mice and could speed research into ageing and dementia that benefits both people and pets.