Rayna Bell, a herpetology expert and curator at the California Academy of Sciences, told Snopes it's true that some frogs have heart-shaped pupils ... "Red-Eyed Tree Frog." San Francisco Zoo ...

Scientists found a “large” creature with a heart-shaped tongue in a forest of Vietnam and discovered a new species, a study ...

Their “enlarged” heads have “dark green” eyes, spines on the upper lip and heart-shaped tongues. Photos show the new species. Seen from above, the frog is dark brown with slightly paler ...

A Nyctimantis diadorim, or Brazilian backland casque-headed tree frog, perched on ... reddish-brown with diamond-shaped pupils, and their “large” tongues are “heart shaped.” ...