Caltrans will build a 2,000- square-foot pond for the endangered ... Weiss said. California red-legged and Pacific chorus frogs once filled ponds, puddles and streams in the Bay Area.

Each winter, Portland volunteers "taxi" Northern red-legged frogs to and from their egg-spawning ... To accomplish that task, the group sets up a 400-foot fence set back a little ways from the ...

In a study published in the journal Science on Thursday, researchers report that when a glass frog falls asleep, almost all of its red blood cells retreat into its liver. They hide in the organ ...