The Chemistry of Instinct...
A mouse doesn't have to have experience with a cat to be afraid, be very afraid. But they must have... ...otton balls laced with predator smells, including cat saliva and rat urine. The normal mice backed into... ...were able to isolate some proteins that spelled " *strong...
https://www.neatorama.com/2010/05/18/the-chemistry-of-instinct/
