The Dog Who Rescues Cats 救猫的狗金妮的真实故事
In fact some dog breeds’ heads vary in shape by more than the variation between cats and walruses.
事实上，有些品种的狗在颅骨形状上的变化已经比猫和海象种群中发生的变化还要大。
Where there is more than one instance of the type to output -- in this case, where you have two cats but one dog -- you need to collect the hashes as an anonymous array of anonymous hashes.
在需要输出一个类型的多个实例的情况下 —— 在这个示例中，有两只猫和一只狗 —— 需要以匿名散列的匿名数组的形式收集散列。
A control group of 24 dogs were also played the dog growls but were instead shown silhouettes of large and small cats or geometric shapes.
科学家给参照组24只狗放映大小不等的猫或几何形状的阴影图片以代替原来狗的图片，并同时播放狗叫声。
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