Witness nature’s magic as the goliath bullfrog undergoes a stunning transformation. From wiggling tadpole to colossal frog, ...

Nectophrynoides comprise only about one percent of all frogs and toads, but that number is officially increasing. In a study published in the journal Vertebrate Zoology, biologists describe an ...

Tadpole species that lost their lungs through evolution never re-evolve them, even when environmental change would make it ...

LOS ANGELES — The Los Angeles Zoo has released 450 tadpoles and 193 subadult southern mountain yellow-legged frogs into the streams of the San Gabriel Mountains in an effort to restore the species ...

Researchers have developed an enhanced LC-MS/MS method capable of quantifying 18 steroids—including key corticosteroid and sex steroid hormones, as well as intermediates involved in corticosteroid ...

Have you ever wondered how city life affects animals like frogs? A new study reveals that urban Túngara frog tadpoles develop faster —but end up being smaller — than tadpoles from forests, probably ...

A 161 million-year-old fossil, linked to a line of extinct frog-like amphibians, is the oldest tadpole ever found. By Asher Elbein The metamorphosis of a frog from baby to adult is one of nature’s ...

An artist depicts the tadpole and frog individuals of the Notobatrachus degiustoi species. The oldest known tadpole fossil, which belongs to this species, was found in the Patagonia region of ...