breeding hybrid animals

例句：

1. 1. The breeder is responsible for selecting the best animals to produce the desired traits.
   育种者负责选择最佳动物以产生所需的特性。
2. 2. The new breed of dog has a sleeker and more athletic appearance.
   这种新品种的狗拥有更光滑、更具有运动能力的外观。
3. 3.Breeding programs are designed to improve the genetics of specific species.
   育种计划旨在改善特定物种的遗传品质。