Kaytee Timothy Hay (48oz.) www.petsmart.com - $8.49 Product Description: Timothy Hay is an excellent source of fiber and appropriate levels of protein for adult rabbits and other small animals. In addition, it is naturally low in calcium and phosphorous; an important feature for adult rabbits. RattyRat's Review: This can be a wonderful and fun choice for your rats' bedding material. Rats love to make intricate nests out of this hay, creating many hours of great fun. It can be a little dusty though.