Abstract

thirsty, hot, tired, excited, sleepy. They suffer injury and lick their wounds. Sooner or later every biologist must concede that "care" is there. Call these "interests" or "preferences" or whatever; if "caring" is too loaded a term, then call these animal "concerns." Staying alive requires "self-defense." Living things have "needs." One of the hallmarks of life is that it can be "irritated." Organisms have to be "operational." Biology without "conservation" is death. Biology.