#285: Dr. Doug Mader explains that many snakes sold in pet stores have a venomous bite without people knowing it — from garter snakes to hognose snakes — which you should research before buying. The legalities differ by state, but obtaining a legal license to have a venomous snake has...

#284: Dr. Eleanor Spicer Rice gives context to why betta fish attack others in her book “Your Pets’ Secret Lives: the Truth Behind Your Pets’ Wildest Behaviors,” explaining that humans breeding for ever more exotic colors in Betta fish have made them increasingly aggressive.