Scientists have long puzzled over the origins of eukaryotes, the domain of life defined by cells with a membrane-bound nucleus, which includes all animals, plants, fungi, and insects. If they unravel ...

Mammals have been discovered to have a secret superpower: nearly all species glow in the dark. Before now, it was thought that only Australian marsupials such as platypuses, wombats, Tasmanian devils ...

An international team has reconstructed the genome organization of the earliest common ancestor of all mammals. The reconstructed ancestral genome could help in understanding the evolution of mammals ...

Pests come in all shapes and sizes, but none quite make our skin crawl like rodents — a group of mammals that includes rats, mice, squirrels, and chipmunks, that are characterized by their ...

In the natural world -- where predators pounce, prey flee, and group members feed and sleep in solidarity -- animal behavior is glorious in its variety. Now, new research suggests there may be an ...

ROSEVILLE -- Rodents are wreaking havoc in Roseville parks, but Placer County officials have found a creative way to give nature a chance to fight back. Josh Huntsinger says the vole population has ...

Rodents may have a rule of thumbnails. Many rodents have curved claws that help the animals climb or dig. But most also have flat nails on their thumbs, researchers report in the Sept. 4 Science. This ...