Singing Mice Top The Charts

Maybe singing mice (Scotinomys teguina) wouldn’t make it to Hollywood in America’s Got Talent, but they put on a good show. Males of these diminutive Neotropical rodents sing by producing a series of trills when attracting mates (Figure 1). Like some birds, singing mice Read More...

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...

The Evolution of River Dolphins

You may have heard of freshwater sharks, but what about freshwater cetaceans? Pods of gregarious white belugas leave the ocean and move up large rivers (e.g. St. Lawrence River) in the Read More...

What Parasites Can Tell Us About Pika Evolution

The Bering Land Bridge, a temporary Pleistocene corridor between Siberia and North America, is well known to mammalogists. It was responsible for the dispersal of some mammalian species from Asia into North America and others from North America into Read More...