Can Turtles Eat Cheese? Vet Approved Nutrition Facts & FAQ

By Beth Crane · Reviewed & fact-checked by Dr. Karyn KanowskiVet Approved

Reviewed & Fact-Checked byDr. Karyn KanowskiVeterinarianKaryn has lived in the UK for the past 10 years after moving from Queensland, Australia. In 2010, she graduated from The University of Queensland School of Veterinary Science, and also holds a Bachelor’s degree in Zoology. Karyn is passionate about using evidence, experience, and owner collaboration to provide the best solutions for pets, and believes in making reliable information about animal health accessible to all. She shares her home with 5 cats, 4 dogs, and 1 husband, and when she is not practising as a veterinary surgeon, she spends her time writing, gardening, and cleaning up pet hair!View authorThe information is current and up-to-date in accordance with the latest veterinarian research. Read about our vetsUpdated on October 7, 2025

In this article

What Do Turtles Eat in the Wild?Which High-Calcium Foods Can Turtles Eat?Supplements

Turtles are mostly omnivorous reptiles that can live fully or semi-aquatically, and usually have varied diets. There's little information about giving turtles cheese or dairy available simply because they'd never come across it in the wild, and most exotic veterinarians and nutritionists focus on replicating as natural a diet as possible. A turtle's natural diet does not include cheese!

Turtles wouldn't eat or drink dairy in the wild because turtles cannot digest lactose, and do not drink milk at any stage of their lives, including as babies. Cheese is fermented milk, so turtles cannot digest it, and it could make them very ill if you fed it to them.

What Do Turtles Eat in the Wild?

Turtles can have various diets in the wild; most are omnivorous, but they can be carnivorous or herbivorous. Semi-terrestrial (land-dwelling) and fully aquatic turtles can also have different diets, depending on their environment. Generally, omnivorous turtles will eat animal proteins such as fish or amphibians, invertebrates (insects, crustaceans, worms), and vegetation such as dandelion, leafy greens like collard greens, and kale.

There are only two types of completely carnivorous turtles; the Green Sea Turtle and the Loggerhead Turtle, neither of which are kept as pets.

Turtles would never come into contact with cheese or other dairy products in their natural habitat, so do not feed it to them in captivity.

Turtle eating kale — Image By: cooky_luvs, Shutterstock

Which High-Calcium Foods Can Turtles Eat?

Turtles do need a diet with good levels of calcium to support bone and shell growth and strength, but dairy is not an appropriate calcium source. The best way to address your turtle’s calcium requirements is by providing them with a high-quality commercial turtle pellet food, a range of animal protein (eg. invertebrates, not meat), and vegetables that are high in calcium, such as kale, collard greens, romaine lettuce, green beans, and dandelion leaves. It is important that the foods selected have a high calcium-to-phosphorus ratio, as the wrong balance of these minerals can lead to a potentially fatal condition called Metabolic Bone Disease.

Supplements

Aside from using food sources, many turtle owners will give their turtles a powdered calcium supplement to ensure they get the right amount. Many commercially available calcium powders are available, but most are not regulated, so ask your vet for advice on the best type for your turtle. The best way to ensure your turtle is receiving the right balance of nutrients is by feeding a high-quality, balanced diet, and you should not add supplements without first speaking to your veterinarian, as unnecessary mineral supplements can lead to problems.

hermann turtle eating — Image Credit: Studio Empreinte, Shutterstock

Conclusion

Turtles never come into contact with lactose products in their natural habitat. Turtles do not drink milk from their mothers or consume it in the wild, so they likely lack the essential enzymes to digest it. While cheese contains calcium, there are many other ways to meet your turtle’s calcium requirements without going to the dairy department.

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Featured Image Credit: HandmadePictures, Shutterstock