OXBOW PET PRODUCTS 744845402154 Alfalfa Hay for Pets, 15-Ounce Alfalfa is very nutritious, full of fiber, energy, protein, calcium and other nutrients. It is the wonder food of the hay world. But even "wonder foods" have their place. There are times you can and should give alfalfa to rabbits and other small animals, as long as you remember, "Everything in moderation".