In relation to other members of the order Artiodactyla, what is the unique size classification of chevrotains?

Answer

The smallest extant members

Despite being even-toed hoofed animals (Artiodactyla), chevrotains hold the distinction of being the smallest living members within that entire order.

In relation to other members of the order Artiodactyla, what is the unique size classification of chevrotains?
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