Dog Brains Decoded: New Study Challenges Old Beliefs

Researchers Garamszegi and Kolm have found that domestication isn’t the sole factor in reducing brain size in canids. By examining 25 species, they show that ecological adaptations like hibernation in raccoon dogs also play a crucial role, urging a reconsideration of domestication’s evolutionary impact.

A recent study by László Zsolt Garamszegi from the Institute of Ecology and Botany, Centre for Ecological Research, Hungary, and Niclas Kolm from the Department of Zoology, Stockholm University, Sweden, challenges the long-held notion that domestication is the primary driver of reduced brain size in domesticated animals, specifically dogs. The study employs a phylogenetic comparative method to analyze whether the domesticated dog (Canis familiaris) exhibits a uniquely small brain relative to its body size compared to other canid species.