Cockroaches that catch a ride on ants. Grasshoppers that climb aboard sheep. Hitchhiking animals are more common than you think. A classic example of phoresy, the remora uses a modified fin that ...

Scientists in Australia have identified the oldest known fossil footprints of a reptile-like animal on a slab of sandstone ...

Originally from South America, the charismatic tegu made its way to the United States via the pet trade of the 1990s. But a recent discovery shows these reptiles are no strangers to the region -- ...