为什么猫和老虎同是猫科动物有那么大的区别?

2025-02-06 06:56:01
推荐回答(2个)
回答(1):

1、猫科动物起源于类似猎猫类的原始类型,猎猫类形态和性类似现在的猫科动物而较原始,以前作为猫科动物的一个亚科,现在则多作为独立的猎猫科。猎猫科大体占据和猫科类似的生态地位,比较多样化,多数犬齿比较发达,其中有些成员如始剑虎等发展出了类似剑齿虎的发达的上犬齿,是当时厚皮动物的主要捕食者;

2、真正的猫科诞生后向着两个方向发展,一支上犬齿逐渐延长,另一支犬齿趋于变小而身体比较灵活。上犬齿逐渐延长的这一只被归入剑齿虎亚科,其中以晚期的剑齿虎为代表。剑齿虎大概是所以史前哺乳动物中最引人注目的,体型巨大,上犬齿特别发达,可能以厚皮动物为食,并随着厚皮动物的减少而消失;

3、而我们现在看到的老虎就是第一支上犬齿逐渐延长(剑齿虎)的后代进化而来的。而另一支犬齿趋于变小而身体比较灵活的现在多数进化成犬齿较小而身体比较小巧灵活的猫、猞猁。动物的体型大小,是由后天的生存环境决定的。猫和老虎虽然都是猫科动物,但它们可能不是同一个祖先。

回答(2):

为什么邹市明和泰森同是拳击手有那么大的区别?

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