You can teach a kid to change a tire without saying a word. It’s the same thing. Rats are very smart and very social. Rats that were good at teaching Rathood to their little ones had more that survived.

Put food in a maze and I’m sure rats would teach other rats how to get it. I expect this is similar.

Our dog learned to find tennis balls by smell off a dog that was good at it. This was after me one walk with this dog.

Every trip to the park got us a few.

Then he ate one and have himself a bowel obstruction and me a great enthusiasm for pet insurance.