多大的猫耳朵会立起来？
kittens ears stand up and down in any pattern. The ear is shaped the way it should look. My kitten has one ear that stands straight up. the other ear stands up half-way then it flops over. they will stand up as the kitten grows. when kittens are between 5 to 8 weeks old their ears and whiskers will grow faster. by the time the kitten is 12 weeks old， the ears should be all stand up and grown to full size.
当kittens只有2周时，他们的耳朵是紧关闭的，没有打开。只有到了3-4周，耳朵才会完全打开。在3周时，可能会出现一个耳朵开了，另外一个还没有开。5-8周时，他们的耳朵和胡子会长得特别快。（胡子长了，说明耳朵不会有问题的）
通常12周时，耳朵就会长大，而且直立。但是也有些猫要到4-6个月时，耳朵才会直立。也有些猫，要到1岁才会完全直立的。
所以，猫的耳朵直立时间是12周-1岁都有可能的。