-Kangaroo, [137]

Ratel, [437], [438]

Red Deer, [293]

Reed Buck, [311]

Reindeer, [292], [298], [299]

Reithrodon, [480]

Reithrodontomys, [480]

Reithrosciurus macrotis, [464]

Reproductive organs, [70]

Respiratory organs; see Lungs