最近,某综艺节目中出现的骑马场景，在网络上引发了讨论：摘要：综艺节目骑马场景 | 来源：芒果TV抛开节目本身，有人就要问了，嘉宾们骑的是什么马？我们身边和大型犬一般高的小矮马、草原景区上身高略矮的蒙古马、拉车的高头大马都是怎么来的呢？它们为什么长的不一样？
一方面它们可以被重新驯养，成为马基因库的后备军，注入新鲜的血液，或者是当作制品来源。另一方面它们并非本土物种，作为非归化的外来物种，对澳大利亚本土生态具有威胁，不仅会伤及当地植被，在和红袋鼠等本土生物竞争食物的时候，还会破坏人类的围栏，和牧场内的牲畜竞争食物，当地政府也曾试图控制住它们的数量。
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来源：中科院物理所