Ham.

• Hard boiled eggs. These should not be fed to your rat on a regular basis, just as a treat once in a while. I’ve heard that these are good for pregnant rats because of the fat and extra protein.

• Honeydew melons.

• Kale.

• Kiwi.

• Lettuce. Romaine lettuce is the best for your rat because it has more nutritional value than iceberg. Some people will tell you to avoid iceberg lettuce altogether because it has close to no nutritional value.

• Macaroni and cheese.

• Mashed potatoes.

• Mealworm.

• Meat baby food.

• Melons.

• Mushrooms. These are only okay for your rat if they are cooked and should be fed in moderation.

• Oatmeal.

• Oatmeal cookies.

• Papaya.

• Parsley.

• Pasta. Rats can have cooked or dried pasta. They find tri-colored spirals that have a spinach or tomato flavor extra tasty. Dried pasta is good because it is crunchy and they like to chew on it. Pasta has a great source of carbohydrates, which are good for rats.

• Peaches. Make sure to remove the pit from peaches because it can be harmful.

• Pears.

• Peas.

• Plums.

• Pomegranates.

• Popcorn. It should be unsalted and unbuttered if possible.

• Popsicles. These are great for rats on hot summer days. However, try to only feed your rats non-fat and sugar-free popsicles.

• Potatoes.

• Pumpkins. Pumpkins are fine for rats to eat. However, the seeds are high in fat and should be fed to your pet in moderation.

• Raspberries.

• Red peppers. Test the pepper first to make sure it isn’t too spicy. Then feed only small amounts of it to your rat at a time.

• Rice. Brown rice is especially good for your rat.

• Saltine crackers. My rats love these as snacks. I keep a small sack of them by my chair and feed them crackers when they want a snack. I try not to overdo it though because the crackers are high in salt and I’m not sure if too much would make them sick.

• Scrambled eggs. The protein is great for rats, especially pregnant rats.

• Small dog treats. Small treats are ideal because rats should only have treats in small portions. You can always cut up larger treats into smaller ones—you may even need to do the same with small treats.

• Soy products. Soy nuts are good for rats, but make sure they are roasted and unsalted. Soy products are high in protein and have cancer-preventing agents. Other good soy products include soy milk, soy yogurt, soy tofu, and soy crumbles.

• Squash. Cooked squash is best.

• Strawberries. Rats love strawberries. They are not only sweet and yummy but also healthy for them.

• Sunflower seeds. Make sure that the seeds are unsalted. You can buy these cheaply in bulk and add some to your rat's cage every once in a while for a healthy snack.

• Turkey. Chicken is the better meat for your rat, but small amounts of turkeys are fine too.

• Vanilla custard baby food.

• Vegetable baby food.

• Walnuts. Make sure to only feed your rat these in moderation. They make a great treat every once in a while.

• Watermelon.

• Whole grain crackers. Add a little topping to the crackers for a wonderful little snack.

• Whole wheat pasta.

• Whole wheat bread.

• Yellow peppers. Peppers are fine for your rats as long as they aren’t too spicy, so you may want to test it first.

• Yogurt. Probiotic yogurt in small amounts is good for the gut flora.

• Yogurt covered pretzels.

• Yogurt drops. Most rats absolutely love these

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• Dangerous Foods 

• Apple seeds. Apple seeds have a small amount of cyanide in them that can be harmful for rats.

• Avocado skin.

• Beat tops. These can cause urinary tract problems and stones in the kidneys and bladder due to their extremely high levels of oxalates.

• Blue cheese. The mold that is used to make blue cheese is toxic to rats.

• Carbonated drinks. Rats can’t burp, which is why they should never drink carbonated drinks.

• Caffeinated drinks. Drinks containing high amounts of sugar are bad for your rats.

• Candy. Like chocolate, candy is too sugary. Rats can have problems with digesting these foods.

• Chocolate. This is also bad for rats because of the high fat and sugar content. I’ve heard that some owners feed dark chocolate to their rats once in a great while without problems. However, I just avoid chocolate altogether.

• Dried corn. While fresh corn is okay, dried corn is not. This is because it contains fungal contaminates that can lead to liver cancer in rats.

• Green bananas. While regular bananas are okay, green bananas inhibit starch digestion enzymes.

• Green potato skins and eyes. These contain solanine, a toxin for rats.

• Hamster food. Hamster food is high in fat.

• Licorice. This food is suspected to cause neurological poisoning in rats.

• Mango. This fruit contains d-limonene and can cause kidney cancer in male rats.

• Moldy foods. Some people think that just because rats are rats, they can eat moldy food. However, mold and bacteria can be extremely toxic to rats, just as they can be to humans.

• Oranges. Both the outer and the white parts of orange peels can be harmful for male rats. I’ve heard that it seems okay for females, but I would just avoid citrus fruits like oranges to be on the safe side.

• Orange juice. Orange juice contains d-limonene, which can cause kidney cancer in male rats.

• Peanuts. These have been found to have anti-nutrients that, like raw dried beans, will destroy vitamin A and certain enzymes that rats need to break down proteins and starches. This will then cause red blood cells to clump together.

• Poppy seeds. While it is unknown why, poppy seeds seem to cause rats to become sick and sometimes even die.

• Potato eyes.

• Raw artichokes. This vegetable inhibits protein digestion in rats.

• Raw beans. Destroys vitamin A and enzymes that rats need to digest protein and starches. This can cause red blood cells to clump and is a hazard for rats.

• Raw Brussels sprouts. These can destroy thiamin.

• Raw bulk tofu. The bulk unpackaged tofu contains bacteria and is unsafe.

• Raw onions. These can cause anemia and give rats upset stomachs.

• Raw red cabbage. Raw red cabbage destroys thiamin.

• Rhubarb. Rhubarb contains toxic amounts of oxalates.

• Raw sweet potato. Since sweet potatoes are potatoes, people think they are okay to feed to their rats. However, raw sweet potatoes recently have been found to have compounds that will form cyanide in rat's stomachs.

• Spinach. Due to the high levels of oxalates, spinach can cause urinary tract problems and stones in the bladder and kidneys.

• Sweet feed. This is feed made for horses and is not good for rats because there is too much corn and molasses in it.

• Wild insects. These should never be fed to your rat because they can carry diseases and internal parasites. I’ve heard that cooked insects and insects bought from a store is okay.

• Foods to Be Cautious With

• Peanut butter and other thick, sticky foods. These should be given in very small amounts because they can cause choking. I will mix the peanut butter with a little bit of jelly or water to help it become less sticky and less of a choking hazard.