Whether your pet likes hay in the form of sticks, hay cubes or treats, or prefers it served loose, PetSmart makes it easy to find the right option for your small pet. The best types of hay for rabbits and guinea pigs are Timothy, oat grass and orchard grass. Choose soft-cut hay to avoid sharp ends that could poke your pet, especially if they end up using it to build a nest in their enclosure. While they can eat hay,
hamsters are more likely to use it for bedding, so choose a soft, comfortable material for their nests.