What distinguishes male Chinese water deer from other Cervidae regarding head ornamentation?

Answer

Possesses prominent, sharp tusks instead of antlers.

The Chinese water deer is unique within the entire deer family (Cervidae) because the males, known as bucks, completely lack antlers, which is the standard characteristic associated with nearly all other deer species, especially during mating season. Instead of this traditional bony rack, the buck carries a pair of long, prominent, sharp tusks. This evolutionary divergence sets *Hydropotes inermis* apart, emphasizing a different strategy for male competition and display compared to its antlered relatives. While most deer utilize seasonal antlers for sparring and signaling fitness, the water deer relies on these fixed dental weapons year-round.

What distinguishes male Chinese water deer from other Cervidae regarding head ornamentation?
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