Hay is the most important part of your rabbit’s diet. It has many benefits. For example, hay has fiber, which helps move waste through your rabbit’s intestines and prevent intestinal stasis (‘gut stasis’). Hay also gives your rabbit something to chew on, which helps him keep his teeth filed down.  In addition, hay can keep your rabbit entertained, since he can sift through it and move it around his enclosure.  Grass hay (e.g., timothy, oat) is higher in fiber than alfalfa or clover hays, and is thus the ideal type of hay to feed your rabbit. Alfalfa and clover hays are high in protein and calcium, which can lead to kidney and bladder problems in older rabbits.  Good quality hay is green and fragrant, and is free of mold and dust.  Consider buying your hay from your local feed store. Compared with the hay at a pet store, hay at a feed store will likely be fresher and contain more of the nutrients your rabbit needs. Pellets should only make up a small amount of your rabbit's diet. They are high calorie and low fiber which leads to obesity and overgrown teeth. Give extruded pellets only (each kibble looks the same) rather than muesli type diets (as these encourage selective eating of the tastier, low calcium components). Each day, give your rabbit about one ounce per pound they weigh. If your rabbit is addicted to pellets and won't eat hay, then make a gradual change over by cutting back on the pellets and making sure they have access to sweet, green hay.  Pellets should be approximately 18% to 20% crude fiber, 14% to 16% protein, and 1% each of fat and calcium.  The pellets you feed your rabbit should be timothy-based, rather than alfalfa-based.  Avoid pellets sold through feed stores or markets that are not in sealed packaging. Exposure to the air degrades the vitamins and makes for reduced nutrition. Ideally, buy the smallest sealed bag of food possible since a large bag once opened will start to degrade. Fresh vegetables keep your rabbit’s intestines well hydrated, which helps with overall digestion. There...

===
Write a summary of the previous text in Vietnamese:
Cung cấp cỏ khô cho thỏ. Thêm cỏ nén (pellet) vào chế độ ăn của thỏ một cách có chừng mực. Cho thỏ ăn rau xanh. Cung cấp nước sạch cho thỏ. Tìm hiểu các loại thức ăn không được phép đưa cho thỏ.