Species tested in two-choice hydrolysate preference tests, including the short names used for figures and remaining tables.

*Order is contested; molecular evidence suggests that guinea pigs should be put in their own, unique order [22].+See Supporting Information Appendix S1 for the basis for these dietary categorizations.* 分类阶元“目”的归属存在争议；分子生物学证据表明，豚鼠（guinea pig）应当被归入其独有的专属目级类群[22]。 + 详见补充材料附录S1，以了解上述饮食分类的依据。