Search
Animals

Dogs Are Twice as Smart as Cats, Says Brain Comparison Study

Dogs and raccoons are among the most intelligent animals on Earth, according to a new investigation of mammal brains.

An illustration of carnivore brains. | Suzana Herculano-Houzel, Vanderbilt University
Joe Howell, Vanderbilt University
Suzana Herculano-Houzel. | Joe Howell, Vanderbilt University