Are Dogs Smarter than Cats? Science Now May Have the Answer

Which is smarter – a cat or a dog? A new study may be shedding some light on an old argument that’s had pet owners fighting like, well… you know.

The study, published in Frontiers in Neuroanatomy, focuses on the number of neurons (cells associated with thinking, planning and complex behavior – considered hallmarks of intelligence) in the cerebral cortex of several carnivores, including cats and dogs.

“In this study, we were interested in comparing different species of carnivorans to see how the numbers of neurons in their brains relate to the size of their brains, including a few favorite species including cats and dogs, lions and brown bears,” wrote Associate Professor of Psychology and Biological Sciences Suzana Herculano-Houzel.

According to the study, dogs have significantly more neurons than cats – about 530 million compared to about 250 million.