Make Your Editor Cry: Deer (Awkward Plural)

Make Your Editor Cry: Deer (Awkward Plural)

BLUF: (Bottom Line Up Front)
The plural of deer is deer.

deer : any of various slender- legged, even-toed, ruminant mammals (family Cervidae, the deer family) having usually brownish fur and deciduous antlers borne by the males of nearly all and by the females only of the caribou

The singular of deer is deer. The plural of deer is also rightly deer. The word deers is not a thing, or a word.

Deer are found in all continents except Antarctica and Australia.
Deer are excellent jumpers and swimmers.