Why Spider Monkeys Only Have Four Fingers
0
0
4,200 观看·
12/19/17
Unlike virtually every other primate, spider monkeys have no thumbs, which could snag on the branches. Instead, their four long fingers form a perfect hook to help them swing on branches. From the Series: Amazing Monkeys: The Americas http://bit.ly/2y7TQ5Y
显示更多
0 评论
sort 排序方式
