ArticleNature communications2026
Mapping the canine gut microbiome: insights from the Dog Aging Project.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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19 authors.
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Abstract
Companion dogs (Canis lupus familiaris) offer a unique model for studying the gut microbiome and its relation to aging due to their cohabitation with humans, sharing similar environments, diets, and healthcare practices. Here, we present the Dog Aging Project (DAP) Precision cohort, a large population-wide study of the canine gut microbiome. This cohort encompasses over 900 dogs of diverse breeds, environments, and demographics living across the United States. Coupling fecal shotgun metagenomic sequencing with phenotypic and environmental surveys and clinical lab tests, we explore the intricate relationships between microbiome composition, aging, and key factors such as health and living conditions. Our analyses identify multiple factors associated with microbiome composition, including dietary preferences such as commercial versus home cooked nutrition, and behaviors such as coprophagy (feces eating). In addition, we find age-associated gradual shifts in microbiome composition, supporting the development of a metagenomics-based population-level model for canine age prediction based on microbial signatures. We further examined which age-associated microbial patterns observed in humans are recapitulated in dogs by comparing our cohort with the Lifelines-DEEP cohort. Overall, these findings offer insights into the role the gut microbiome plays in our four-legged companions, with potential implications for veterinary medicine and translational aging research.
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