The family of deer (Cervidae) is divided into two main groups: species of the Old World (subfamilies of Muntjaks and Real deer) and species of the New World (subfamilies of Water Deer and Roe Deer). These bindings to the countries of the world indicate the origin, not the modern distribution of each group. And there are 51 species of deer in total, and this article will introduce you to some of them.
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