Gary Mulcahey / NMNH Some 17,000 years ago, on a wall of Lascaux cave in southwestern France, an artist made a painting ... as an Alaskan moose, and they sported the largest antlers the world ...

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.