Here's why:
* Antlers are naturally shed: Male deer (bucks) shed their antlers annually and grow a new set.
* Removing antlers is usually done for management: Antlers are sometimes removed by wildlife managers to control populations or for research purposes.
* The term "dehorned" is used for cattle: The term "dehorned" is typically used for cattle and other animals with horns, not antlers.
So, you would simply refer to the deer as a "deer" or "buck" regardless of whether it has antlers or not.