polydactylism
1. polydactyl acid
改性聚乳酸
2. While the Coon may be polydactyl, having one or more extra toes on their paws, this trait is generally bred out.
有的缅因猫会有先天性缺陷,往往脚趾头会多出一根或更多,商业培育者通常会排除掉这种特徵。