Can Rabbits eat ...?
Food safety index

Cinnamon is not acutely toxic to rabbits, but it carries real caution flags that make routine feeding unwise. The volatile compounds in cinnamon — particularly cinnamaldehyde and coumarin — can irritate a rabbit's sensitive gastrointestinal tract and mucous membranes, and coumarin carries hepatotoxic potential with repeated exposure. Small, occasional contact is unlikely to cause serious harm, but cinnamon offers no nutritional benefit a rabbit cannot obtain from safer foods, so there is no compelling reason to offer it.

Fresh or dried ginger is not classically toxic to rabbits, but its potent volatile oils and pungent compounds make it inappropriate as a regular dietary item. Small incidental amounts are unlikely to cause serious harm, yet rabbits' highly sensitive gastrointestinal tracts can react badly to even modest quantities. Owners should treat ginger as an occasional, tiny treat at most — not a staple herb.