While most frogs share a simple skull shape with a smooth surface, others have evolved fancier features, such as faux fangs, ... Paluh said, referencing Pacman frogs as one example.

While most frogs share a simple skull shape with a smooth surface, others have evolved fancier features, such as faux fangs, elaborate crests, helmet-like fortification and venom-delivering spikes.

Hyperossification also appears for species that are voracious predators, like Pacman frogs, African bullfrogs, or Soloman Island frogs. These fierce hunters aren’t known to have much in common ...

Some frogs love the water; some prefer dry land. Some are colored to stick out, some to blend in. There are nearly 5,000 different species of frogs hopping, croaking, and swimming across the Earth of ...