Frogs and Toads
Frogs can have brown, green, silver, red, bronze or even gold eyes. Their pupils even come in different shapes. Some frogs even have triangular or star-shaped pupils!
• Round pupils
They look like human pupils.
• Vertical pupils
These let frogs see well in the dark.
• Heart-shaped pupils
Yellow-bellied toads and Oriental fire-bellied toads have heart-shaped pupils.
• Horizontal pupils
These pupils are more commonly seen in frogs that are active during the day.