The Sacramento Mountains checkerspot butterfly is critically endangered, with the last known larva living in a lab in New ...

Ricky Odriosola and one of the butterflies he reared (Photo: Supplied) A series of videos posted by a man, in which he shows the process of rearing caterpillars to butterflies, have gone viral on ...

Papilio is an enthusiastic and adventurous caterpillar. Then she's a blob of goo, hanging out in her chrysalis. Her main goal in life? Metamorphose into a butterfly and learn to fly! Papilio is a ...

Biologists deposited caterpillars of the rare frosted elfin butterfly on its host plant, the sundial lupine, in north Florida. Photo from the Florida Fish and Wildlife Conservation Commission ...