无论是出于病态的好奇心，还是为了追求具有理想特征的后代，人类数百年来一直在选择性地培育植物和动物的杂交物种。人类培育狗和马等动物是为了增强后代的某些特征，包括狩猎能力、速度和审美。当然，也有杂交动物在野外出生，而它们的父母来自不同 ...

Whether driven by morbid curiosity or in pursuit of offspring with desirable characteristics, humans have selectively bred hybrid species of plants and animals for centuries. Animals like dogs and ...