The Canary in the Coal Mine

June 27, 2021By Tim SchilstraPhrases

A sentinel species is a type of animal that is used to detect environmental risks to humans.  The sentinel animal is affected before humans are.  One example is cats.  Cats are more susceptible to mercury poison.  In Minamata Bay, Japan, cats developed “dancing cat fever” when exposed to too much mercury.  The sick cats imply … Read More