- Hippopotamus: Known for its large, gaping mouth that can open up to 150 degrees.
- Crocodile: Possesses a powerful jaw and a wide mouth filled with sharp teeth.
- Pelican: Has a long, pouch-like beak that it uses to scoop up fish and water.
- Alligator: Similar to crocodiles, alligators have wide mouths with numerous sharp teeth.
- Frog: Frogs have large, wide mouths that they use to capture insects and other prey.
- Puffin: Puffins have colorful, triangular-shaped beaks that they use for catching fish.
- Toucan: Toucans are known for their large, brightly colored beaks, which they use for eating fruit and insects.
- Shark: Sharks have wide, powerful mouths lined with multiple rows of sharp teeth.
- Swordfish: Swordfish have a long, flat, sword-like bill that they use for slashing at prey.
- Eagle: Eagles have large, hooked beaks that they use for tearing and ripping at their prey.
- Pelican: Pelicans have a large, pouch-like beak that they use for scooping up fish and water.
- Whale: Some whale species, such as the blue whale, have massive mouths that can open wide to engulf large amounts of water and prey.