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 ...

Their “large” eyes are reddish-brown with diamond-shaped pupils, and their “large” tongues are “heart shaped.” Photos show the various brown shades of the new species. These tree frogs ...

Frog and toad pupils come ... The most common shape, horizontal slits, appeared in 78 percent of studied species. Mapping pupil shapes onto a tree of evolutionary relationships allowed the ...

Take a close look at a house cat's eyes and you'll see pupils that look like vertical slits. But a tiger has round pupils — like humans do. And the eyes of other animals, like goats and horses ...

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.” ...