Opossums Drive Viper Venom Evolution

Biologists often invoke the “arms race” metaphor when discussing the reciprocal adaptations of predator-prey. For example, pitvipers such as rattlesnakes may be engaged in an arms race with opossums, a group of snake-eating American marsupials. Although some mammals have long been known to eat venomous Read More...

Shrew Digestive Enzyme Repurposed into Venom

The diminutive short-tailed shrew (Blarina brevicauda) has long been known to possess toxic saliva. Early reports indicated that humans bitten by short-tailed shrews suffered swelling and burning sensations in the region surrounding the bite. While not lethal to humans, the venom Read More...