411 REFERENCE · Wikibooks
World of Dinosaurs/Horns vs Antlers
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Horns are bone coated in a protein. They stay on the animal's skull and continue to grow throughout the animal's life.
Examples include:
Bison
Cows
Giraffe
Utahceratops
Pachycephalosaurus
Antlers are bones, and they can come off the animal's skull in many cases. In many cases they regrow yearly.
Examples include:
Moose
Deer
Elk