LifeVampire bats might avoid bitter substances to dodge indigestion Vampire bat taste receptors react to "bitter salts" like magnesium sulphate – perhaps because drinking water containing the salts might react badly with the blood the bats eat 51¶¯Âþ
HumansBabies are less afraid when they can smell their mothers When babies can smell their mothers’ odour, their brains respond less to fearful situations 51¶¯Âþ