
Iguanas are mostly herbivores, eating plants, leaves, fruits, and flowers. Their diet requires fresh vegetables and specific supplements. However, some iguanas have been known to eat cat food, which is not recommended due to its high animal protein content. The high protein content in cat food can cause serious kidney issues for iguanas, including renal failure. Therefore, it is important for iguana owners to prevent their pets from accessing cat food.
| Characteristics | Values |
|---|---|
| Iguanas are herbivores | They eat plants, leaves, fruits, and flowers |
| Cat food is too high in animal-based protein for iguanas | It can cause serious kidney issues such as renal failure |
| Iguanas need calcium supplements | They require calcium to support bone health, especially when they are young |
| Iguanas may be attracted to the smell of yeast in cat food |
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What You'll Learn
- Iguanas are herbivores, requiring vegetables and supplements to stay healthy
- Cat food contains too much protein, vitamin D, phosphorus, and fat for iguanas
- Eating cat food can cause serious kidney issues such as renal failure in iguanas
- Iguanas can be fed legumes, flowers, and vegetables, both cooked and raw
- Iguanas need multivitamin supplements and calcium to support bone health

Iguanas are herbivores, requiring vegetables and supplements to stay healthy
Iguanas are herbivores, which means they require plant matter as their primary source of food. In the wild, they feed almost entirely on the leaves of trees and vines, as well as some fruits and flowers. As such, their diet should consist mostly of vegetables, supplemented by small amounts of fruit.
Vegetables that are rich in calcium are particularly good for iguanas. These include collard greens, beet greens, mustard greens, turnip greens, alfalfa hay, bok choy, kale, parsley, Swiss chard, romaine, kohlrabi, escarole, and dandelion. These vegetables should make up 40-50% of an adult iguana's diet. Other vegetables can make up an additional 30-40%, including cactus, broccoli, squash, bell peppers, green beans, sprouts, sweet potato, parsnips, okra, cucumber, asparagus, mushrooms, carrots, peas, and corn.
Fruits can be offered to iguanas but should comprise only a small percentage (less than 15-20%) of their total diet. This is because most fruit is water-rich and nutrient-poor. Fruits that can be offered include apples, pears, bananas (with skin), mangoes, grapes, star fruit, peaches, tomatoes, guava, kiwis, melons, figs, apricots, dates, blueberries, raspberries, and strawberries.
Young, growing iguanas may also be fed legumes, including boiled lentils, navy beans, pinto beans, and kidney beans, but these should never be more than 5% of their total diet. Vegetables can be offered cooked or raw, although raw is preferable as cooking removes many essential nutrients.
In addition to a diet of mostly vegetables and some fruit, iguanas may also require supplements to stay healthy. Most iguanas have a higher requirement for dietary calcium than for phosphorus. Many veterinarians recommend that fully grown, adult iguanas be given a calcium supplement sprinkled on their food once or twice per week. Young iguanas may also need a multivitamin supplement containing vitamin D, as they need this vitamin to form their bones properly.
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Cat food contains too much protein, vitamin D, phosphorus, and fat for iguanas
Iguanas are primarily herbivores, meaning they eat plants. In the wild, they feed almost entirely on the leaves of trees and vines, as well as some fruits and flowers. As such, their diet should consist mostly of vegetables, with a small amount of fruit.
While young, growing iguanas can have up to 10% of their total diet made up of animal-based protein sources, cat food contains too much protein for them to process. Iguanas are meant to process plant proteins, not animal proteins. The high levels of animal protein in cat food can cause serious kidney issues for iguanas, including renal failure.
Cat food also contains too much vitamin D for iguanas. While young iguanas need vitamin D to form their bones properly, and many are housed inside with minimal UV light exposure, veterinarians recommend that they receive a multivitamin supplement containing vitamin D no more than twice a week. Iguanas may only be able to use the specific form of vitamin D made in their skin in response to UV light.
Cat food also contains too much phosphorus for iguanas. Iguanas have a higher requirement for dietary calcium than phosphorus. Phosphorus binds with calcium and prevents it from being absorbed, leading to metabolic bone disease (MBD).
Finally, cat food contains too much fat for iguanas. Iguanas require a diet of fresh vegetables and specific supplements to stay healthy.
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Eating cat food can cause serious kidney issues such as renal failure in iguanas
Iguanas are primarily herbivores, eating leaves, fruits, flowers, and vegetables. Their diet should be mostly made up of dark, leafy greens, with less than 20% fruit. Young iguanas can also be fed legumes and cooked or raw vegetables, although raw is preferable as cooking removes essential nutrients.
While some veterinarians recommend feeding iguanas only plant material, others suggest that up to 10% of their diet can be commercial canned or pelleted food formulated for iguanas. Young iguanas can also benefit from a multivitamin supplement containing vitamin D.
Cat food is not suitable for iguanas. It contains too much animal protein, vitamin D, phosphorus, and fat. Iguanas' kidneys are not equipped to process the high levels of animal protein found in cat food, and continuous consumption can lead to renal failure from overworked organs. This can drastically reduce an iguana's lifespan.
Therefore, it is essential to keep cat food away from iguanas and ensure they do not have access to it. While the occasional consumption of cat food may not be toxic, it can cause serious kidney issues over time.
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Iguanas can be fed legumes, flowers, and vegetables, both cooked and raw
Iguanas are herbivores, meaning they eat plants. Specifically, they are folivores, meaning they eat leaves. In the wild, they feed almost entirely on the leaves of trees and vines, as well as some fruits and flowers.
Iguanas can be fed a variety of vegetables, both cooked and raw, although raw is preferable as cooking removes many essential nutrients. Dark green leafy vegetables should make up most of their diet (80%-90%), with less than 20% of fruit. Good options include calcium-rich vegetables such as collard greens, beet greens, mustard greens, turnip greens, alfalfa hay, bok choy, kale, parsley, Swiss chard, romaine, kohlrabi, escarole, and dandelion. Other vegetables that can be fed to iguanas include cactus, broccoli, squash, bell peppers, green beans, sprouts, sweet potato, parsnips, and cucumber.
Young, growing iguanas can also be fed legumes, including boiled lentils, navy beans, pinto beans, and kidney beans. These food items should never be more than 5% of their total diet.
As a treat, edible flowers may also be offered to iguanas, such as geraniums, carnations, dandelions, hibiscus, nasturtiums, and roses. Iguanas can also be fed commercial canned or pelleted food formulated specifically for them, but this should not make up more than 5%-10% of their total diet.
It is important to note that iguanas should not be fed dog or cat food, as it contains too much protein, vitamin D, phosphorus, and fat.
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Iguanas need multivitamin supplements and calcium to support bone health
Iguanas are herbivores, meaning they eat plants, specifically leaves, some fruits, and flowers. Their diet should consist mostly of dark, green, leafy vegetables, with less than 20% of their diet being fruit. Some vegetables that can be included in their diet are cactus, broccoli, squash, bell peppers, green beans, sprouts, sweet potato, and carrots. While it is recommended to feed iguanas only plant material, some veterinarians say it is acceptable to supplement their diet with up to 5%-10% of commercial canned or pelleted food formulated specifically for iguanas.
Iguanas require calcium to maintain strong bones and teeth, as well as proper muscle and nerve function. A calcium deficiency can lead to various health issues, such as metabolic bone disease. Calcium supplements are a convenient way to ensure iguanas receive the necessary amount of calcium and maintain a proper calcium-to-phosphorus ratio. Most veterinarians recommend sprinkling calcium powder on a growing iguana's food every other day.
Multivitamin supplements are also important for iguanas, as they provide essential vitamins and minerals that may be lacking in their diet. These include vitamin A, which is important for vision, growth, and reproduction, and vitamin D3, which aids in calcium absorption and supports overall bone health. Young iguanas that are housed inside with minimal UV light exposure should receive a multivitamin supplement containing vitamin D twice a week.
Therefore, iguanas need multivitamin supplements and calcium to support bone health, among other health benefits. However, it is important to note that cat food is not suitable for iguanas as it contains too much protein, vitamin D, phosphorus, and fat, which can lead to serious health issues such as kidney failure.
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Frequently asked questions
No, it is not safe for iguanas to eat wet cat food or any cat food in general. Cat food contains high amounts of animal-based protein, vitamin D, phosphorus, and fat, which can cause serious kidney issues and even renal failure in iguanas.
If your iguana ate cat food, ensure they drink plenty of water and consume fresh greens or vegetables. While it may not be toxic, eating too much cat food over time can be hazardous to their health.
Iguanas are primarily herbivores, meaning they eat plants, leaves, fruits, and flowers. Young iguanas can also be fed legumes and cooked or raw vegetables, although raw is preferable for better nutrient retention.
Yes, iguanas require specific supplements like calcium and multivitamins containing vitamin D, especially if they are housed indoors with limited UV light exposure.








































