It’s recommended that pet rabbits be fed unlimited hay or as much hay as they want on a daily basis. Types of hay can include timothy hay, grass hay or oat hay. This should be fed along with the recommended serving of pellet food. A general rule of thumb is a fourth cup of pellet food per 6lbs per day. As for the hay, because it’s unlimited, you might find that your rabbit goes through quite a bit. Buying the small bags at the pet store can get expensive especially if you have multiple rabbits. Instead, check at your local grain store for the price of a bale of timothy hay. The average cost of a small bag is between $3 and $5 whereas a bale is about $8 to $10 and includes a lot more for your money. For other recommendations, talk with your Sugar Land, TX vet. More details here: http://staffordoaksvet.com/