Alfalfa Hay For Rabbits
Yes! Rabbits can eat alfalfa hay but they are better off with a diet that mainly consists of grass hay such as timothy hay.
Alfalfa hay has a higher content of calcium and protein while timothy hay is higher in fiber content. Adult rabbits mainly need a high quality fiber in their diet and therefore timothy hay is a better option than alfalfa hay.
Therefore if you were to feed alfalfa to your adult rabbit in order to change up their diet a bit make sure it is in small amounts and only on rare occasions. Do not overfeed them alfalfa as it could cause health issues and make them not want to eat timothy hay.
So now you know alfalfa hay is safe for rabbits to eat but only in small amounts. Ideally though you should be feeding timothy hay to your rabbits.