Image caption, Male moose grow a different pair of antlers each year The bigger and more impressive a pair of antlers are, the better chance a bull has of catching the eye of a passing female.

F rom the small ossicones on a giraffe to the gigantic antlers of a male moose—which can grow as wide as a car—the headgear ...

Wildlife enthusiast Derek Keith Burgoyne filmed a bull moose dropping both antlers simultaneously while on a visit to Plaster Rock in New Brunswick, Canada Kelli Bender is the Pets Editor at PEOPLE.