| bifidobacterium animalis subsp. lactis | subspecies | bacteria | bacteria | subspecies | 302911 |
| bifidobacterium animalis subsp. lactis atcc 27674 | no rank | | | no rank | 1365954 |
| bifidobacterium cuniculi | species | bacteria | bacteria | species | 1688 |
| bifidobacterium italicum | species | | | species | 1960968 |
| bifidobacterium magnum | species | bacteria | bacteria | species | 1692 |
| bifidobacterium magnum dsm 20222 | no rank | | | no rank | 1121108 |
| bifidobacterium saeculare dsm 6531 = lmg 14934 | no rank | | | no rank | 1437611 |