A new species has recently been discovered, and this one ranks as the second smallest known vertebrate in the world. It belongs to the genus Brachycephalus, which is generally called flea toads.

The Brazilian flea toad, a creature so tiny it can perch comfortably on a coin, has been crowned the world’s smallest vertebrate. It is also the world’s smallest known amphibian. It all ...

(CNN) — Pygmy seahorses, about the size of a fingernail, are some of the smallest vertebrates in the world. First discovered in 1969, little was known about the creatures. But in the early 2000s ...