The Brazilian heart-tongued frog (Phyllodytes kautskyi) is a species of frog in the family Hylidae endemic to Brazil's Atlantic forests.

It has been observed as high as 600 meters above sea level.

[2][3][1] This frog is not classified as endangered because, although much of its habitat has been degraded by logging and deforestation, a very large area remains.

Scientists believe that this is because the frog's microhabitat involves slow-growing bromeliad plants.

The tadpoles swim and grow in the pools of water that collect in the leaves.