What Do I Feed My Pet Lizard? Safe Foods, Schedule & Tips
So you’ve brought home a scaly friend and now you’re staring at your new pet lizard wondering, “Okay, what exactly do I feed this thing?” Don’t worry—you’re not alone in asking this question. Feeding a lizard isn’t as straightforward as tossing some kibble in a bowl like you would for a dog or cat. Different lizard species have wildly different dietary needs, and getting nutrition right is absolutely crucial for your reptilian companion’s health and longevity.
Whether you’ve just adopted a bearded dragon, a leopard gecko, an iguana, or any other type of lizard, understanding their specific nutritional requirements will set you up for success. In this comprehensive guide, I’m going to walk you through everything you need to know about feeding your pet lizard—from what foods are safe to what schedule works best to some practical tips that’ll make your life easier.
Understanding Your Lizard’s Dietary Needs
Before we dive into the specifics of what to feed your lizard, let’s talk about why diet matters so much. Your lizard’s diet directly impacts their energy levels, growth rate, immune system, and overall quality of life. Think of food as the fuel that powers every aspect of your pet’s existence—without the right fuel, even the most well-cared-for lizard can develop serious health problems.
The key to understanding your specific lizard’s needs is recognizing that not all lizards eat the same things. Some are carnivores, some are herbivores, and some are omnivores. Your bearded dragon has completely different nutritional requirements than an iguana, which has completely different needs than a leopard gecko. It’s like saying all animals need meat—it just doesn’t work that way in the reptile world.
Carnivorous vs. Herbivorous vs. Omnivorous Lizards
Let me break down these three categories so you can figure out where your lizard falls on the dietary spectrum.
Carnivorous lizards are the hunters of the reptile world. These species primarily eat insects, small vertebrates, and other meat-based foods. Examples include leopard geckos, monitor lizards, and chameleons. If you own a carnivorous lizard, you’ll be spending a fair bit of time sourcing live insects or pre-killed prey.
Herbivorous lizards, on the other hand, are the vegetarians. These species thrive on a diet of plants, vegetables, and fruits. Iguanas are the classic example here. If you own an herbivorous lizard, you’ll become very familiar with your local grocery store’s produce section.
Then you’ve got the omnivores—the flexible eaters who enjoy both plant and animal matter. Bearded dragons fall into this category, and they’re actually pretty convenient pets because their diverse diet gives you more options.
Carnivorous Lizard Feeding Guide
Insects and Live Food Options
If you’ve got a carnivorous lizard, insects are going to be your bread and butter. The good news is there’s actually quite a bit of variety available. The bad news? You’ll need to maintain these insects and ensure they’re nutritious for your pet.
Crickets are probably the most popular feeder insect. They’re affordable, widely available, and most lizards find them absolutely irresistible. However, crickets can be noisy—really noisy—so keep that in mind if you’re sensitive to sound. Dubia roaches are another excellent option. They’re quieter than crickets, more nutritious, and they don’t escape as easily. If you’re squeamish about roaches, though, I totally understand.
Mealworms and superworms are fatty but tasty treats that many carnivorous lizards love. Think of them as the ice cream of the insect world—nutritious but not something you’d want to feed exclusively. Hornworms are softer and easier to digest, making them great for younger lizards or those with sensitive digestive systems.
Other options include:
- Grasshoppers and locusts
- Waxworms (high in fat, use sparingly)
- Phoenix worms (calcium-rich, excellent nutrition)
- Stick insects (good for arboreal species)
- Small fish (for water-loving species)
Gut Loading and Nutritional Enhancement
Here’s something that separates experienced lizard owners from beginners: gut loading. Gut loading is the practice of feeding nutritious food to the insects before feeding them to your lizard. Think of it as pre-loading the insects with vitamins and minerals that your lizard will then consume.
Feed your insects things like dark leafy greens, sweet potato, carrots, and commercially available gut load formulas for two to three days before offering them to your lizard. This dramatically increases the nutritional value your lizard receives.
Frequency and Portion Sizes for Carnivores
How often should you feed your carnivorous lizard? That depends on their age and species. Young, growing lizards typically need daily feeding, while adults often do fine with feeding every two to three days. A general rule of thumb is feeding insects that are appropriately sized—roughly the same width as your lizard’s head.
Watch your lizard during feeding time. They should finish eating within about 15 minutes. Any remaining insects should be removed to prevent them from stressing your lizard or, in some cases, nibbling on your pet.
Herbivorous Lizard Feeding Guide
Vegetables and Greens for Your Herbivore
If you’ve got an herbivorous lizard like an iguana, vegetables and greens are going to form the foundation of their diet. But here’s the thing—not all vegetables are created equal in the reptile world.
Dark leafy greens should make up the bulk of your herbivorous lizard’s diet. We’re talking about collard greens, mustard greens, dandelion greens, and turnip greens. These are nutritional powerhouses packed with vitamins and minerals your lizard needs. Avoid iceberg lettuce at all costs—it’s basically just water and has almost no nutritional value.
Safe vegetables include:
- Butternut squash
- Bell peppers (no seeds)
- Broccoli (in moderation)
- Carrots
- Zucchini
- Green beans
- Peas
- Pumpkin
Fruits and Occasional Treats
Fruits can be offered occasionally as treats. They’re higher in sugar and should never replace vegetables as the main food source. Safe fruits include strawberries, melon, papaya, and mango. Remember, moderation is key when it comes to fruits.
Calcium and Supplementation
Herbivorous lizards need calcium supplementation because their natural diet might not provide enough. Dust their food with calcium powder two to three times weekly. Calcium is essential for bone health, and without adequate calcium, your herbivore can develop metabolic bone disease—a serious condition that can be prevented with proper supplementation.
Daily Feeding Schedule for Herbivores
Most herbivorous lizards do well with daily feeding. Offer a variety of greens and vegetables each day, removing any uneaten food after 24 hours to prevent spoilage and bacterial growth.
Omnivorous Lizard Feeding Guide
Balancing Insects and Plants
Omnivorous lizards like bearded dragons give you the flexibility to offer both insects and vegetables. The balance shifts depending on your lizard’s age. Juvenile bearded dragons are more carnivorous, eating maybe 80% insects and 20% vegetables. As they mature, this ratio flips, with adults eating closer to 20% insects and 80% vegetables.
This is actually pretty convenient because it means your feeding requirements change as your lizard ages, allowing you to gradually transition them into a more plant-based diet.
Sample Daily Menu for an Omnivore
For an adult omnivorous lizard, you might offer insects on Monday, Wednesday, and Friday, with vegetables available daily. The exact schedule can vary based on your lizard’s individual preferences and your availability, but the key is consistency.
Foods You Should Never Feed Your Lizard
Toxic Plants and Vegetables
Now let’s talk about what absolutely cannot go in your lizard’s mouth. This is important stuff that could literally save your pet’s life.
Avoid feeding your lizard:
- Avocado (contains persin, which is toxic)
- Rhubarb (high in oxalates)
- Spinach (binds calcium)
- Swiss chard (high oxalates)
- Kale (high oxalates)
- Fireflies (poisonous)
- Box elder bugs (toxic)
- Anything treated with pesticides
Inappropriate Feeder Insects
Not all insects are safe either. Wild-caught insects might carry parasites or have been exposed to pesticides. Stick with commercially bred feeder insects from reputable sources. Avoid anything your lizard catches on its own unless you’re absolutely certain it’s safe.
Creating an Effective Feeding Schedule
Age Considerations
Your lizard’s age dramatically impacts how often and how much they should eat. Hatchlings and juveniles are growing rapidly and need frequent, smaller meals—sometimes even daily feeding. Adults can handle less frequent meals but larger quantities.
Species-Specific Schedules
Different species have different metabolic needs. Bearded dragons thrive on one feeding schedule, while a leopard gecko might do better with a slightly different approach. Research your specific species, but here’s a general framework:
Juveniles typically eat daily or every other day. Adults eat every two to three days for carnivores and daily for herbivores. Seniors might eat less frequently and in smaller quantities.
Water and Hydration
While we’re talking about feeding, we can’t ignore hydration. Water is just as important as food. Some lizards drink from water bowls, while others prefer lapping water from leaves. Misting your lizard’s enclosure or providing live plants can help with hydration. Many lizards get some water from their food as well, especially if you’re feeding vegetables with high water content.
Supplements and Vitamins
Calcium Supplementation
I mentioned calcium earlier, but let me emphasize again how crucial this is. Calcium powder should be dusted on your lizard’s food regularly. Without adequate calcium, your lizard can develop metabolic bone disease, which causes soft bones, deformities, and eventually paralysis. It’s preventable and not something you want to deal with.
Vitamin A and Other Nutrients
Beyond calcium, your lizard might need additional vitamins, especially vitamin A. However, be careful with vitamin A supplementation—too much can be toxic. A multivitamin supplement designed for reptiles can help fill nutritional gaps, but don’t go overboard. More isn’t always better in the supplement world.
Recognizing Signs of Poor Nutrition
How do you know if your feeding approach is actually working? Watch for these warning signs that might indicate nutritional problems:
- Lethargy or unusual lack of energy
- Weight loss or obesity
- Lumpy, bumpy appearance to the spine or limbs
- Soft or rubbery jaw
- Loss of appetite
- Constipation or diarrhea
- Discoloration of the skin
If you notice any of these issues, it’s time for a vet visit. A reptile veterinarian can assess whether your feeding approach needs adjustment.
Practical Feeding Tips and Tricks
Where to Source Feeder Insects
You’ve got several options here. Online retailers ship insects directly to your door—convenient but sometimes pricey. Local pet stores usually carry the basics. Some people even breed their own insects to ensure quality and save money. If you go the breeding route, you’ll need appropriate containers and feeding supplies for the insects themselves.
Storing Feeder Insects
Crickets and roaches need decent housing. Keep them in ventilated containers with hiding spots, food, and water. The better you care for your feeder insects, the more nutritious they’ll be for your lizard. It’s an extra step, but it pays dividends.
Making Feeding Time Easier
Some people use feeding tongs to hand-feed their lizards. This approach lets you control the feeding process and build a closer relationship with your pet. Others simply drop insects into the enclosure and let nature take its course. Neither approach is wrong—it’s whatever works best for you and your lizard.
Common Feeding Mistakes to Avoid
Overfeeding and Obesity
This is a real problem in captive lizards. When food is always available or offered too frequently, lizards can become obese. Obesity leads to serious health problems including liver disease, heart problems, and reduced lifespan. Follow appropriate feeding schedules and portion sizes.
Underfeeding
On the flip side, feeding too infrequently or in insufficient quantities can cause malnutrition. Your lizard won’t thrive if they’re constantly hungry. Strike a balance based on your species’ needs and your individual lizard’s body condition.
Feeding Inappropriate Sizes
Offering prey that’s too large can cause choking or impaction. Conversely, prey that’s too small isn’t worth your lizard’s effort to hunt. The sweet spot is usually prey roughly the size of your lizard’s head.
Special Dietary Considerations
Breeding and Egg-Laying Females
Female lizards that are producing eggs need extra nutrition, especially calcium. Increase their feeding frequency and ensure supplementation is consistent. Egg production takes a toll on the body, so proper nutrition during this period is vital.
Sick or Recovering Lizards
When your lizard is ill or recovering from injury, their dietary needs might change. Your vet might recommend specific foods or feeding schedules during recovery. Always follow veterinary guidance in these situations.
Conclusion
Feeding your pet lizard properly is one of the most important responsibilities you’ll undertake as a reptile owner. There’s no one-size-fits-all answer because every species has unique needs, and even individual lizards within a species can have preferences and sensitivities. The key is understanding your specific lizard’s dietary category, researching their particular species requirements, and then observing how your individual pet responds to your feeding approach.
Start with the guidelines I’ve provided here, watch your lizard closely for signs of good health, and don’t hesitate to consult with a reptile veterinarian if you’re unsure about anything. Your dedication to getting nutrition right will result in a healthier, more active, and longer-living companion.
