Many animals have pincers, though the term is sometimes used loosely. Here are examples categorized by type:
Arthropods
Crustaceans: Crabs, lobsters, crayfish, shrimp, and barnacles have pincers called chelae.
Insects: Some insects, like earwigs, have pincers at the end of their abdomen.
Arachnids: Scorpions have pincers at the front of their body, while some spiders have pincer-like mouthparts called chelicerae.
Other Animals
Spiders: Use chelicerae to inject venom and hold prey.
Sea anemones: Some have cnidocytes, which are stinging cells that resemble pincers.
Starfish: Some have tiny pedicellariae used for cleaning and defense.
Some mollusks: The nautilus has beak-like mandibles used to break prey.
Keep in mind that structures resembling pincers may serve different functions depending on the animal.