Brown rats are the undisputed winners of the real rat race. New research suggests that they crawled off ships arriving in North America earlier than previously thought and out-competed rodent rivals – ...

How important is play to an animal like a rat? It could be as essential as taking a breath. When scientists removed rats’ cerebral cortex, the brain area that governs higher cognition, the animals ...

FILE - Rats swarm around a bag of garbage near a dumpster in New York on July 7, 2000. A study published Wednesday, April 3, 2024, in the journal Science Advances suggests that brown rats crawled off ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Brown rats are the undisputed winners of the ...

Brown rats are the undisputed winners of the real rat race. New research suggests that they crawled off ships arriving in North America earlier than previously thought and out-competed rodent rivals – ...