Rats are known for their ability to eat a variety of foods, but can rats eat superworms? In this comprehensive guide, we will explore the topic of rats consuming superworms, also known as Zophobas Morio worms. We will discuss the nutritional benefits, potential risks, and tips for feeding superworms to your pet rats.

What are Superworms?

Superworms, scientifically known as Zophobas Morio, are a type of beetle larvae commonly used as food for reptiles, chickens, and fish. They are often found in pet stores and bait shops and are known for their high protein and fat content. These worms are larger than mealworms, making them a more substantial meal for larger animals.

can rats eat superworms
Photo by Julia Filirovska: https://www.pexels.com/photo/worms-on-a-stainless-bowl-8250731/

Nutritional Profile of Superworms

Superworms are an excellent source of protein and fat, making them a valuable food source for many animals. Their nutritional profile includes:

  • Protein: Approximately 42%
  • Fat: Approximately 29%
  • Fiber: Approximately 7%
  • Moisture: Approximately 14%

Due to their high protein and fat content, superworms can be an excellent addition to your rat’s diet, providing essential nutrients for their growth and overall health.

Can Rats Eat Superworms?

Yes, rats can consume superworms, and many rat owners have found that their pets enjoy hunting, killing, and eating these worms. They are a good source of protein and fat, which can be beneficial for your rat’s health. However, it is essential to feed superworms in moderation, as too many can lead to obesity and other health issues.

Benefits of Feeding Superworms to Rats

There are several benefits to feeding superworms to your rats, including:

  1. High-Quality Protein Source: Superworms provide an excellent source of protein, which is essential for your rat’s growth, muscle development, and overall health.
  2. Natural Hunting Instinct: Rats are natural hunters, and feeding live superworms can help stimulate their instincts and provide mental stimulation.
  3. Variety in Diet: Introducing superworms to your rat’s diet can add variety and prevent boredom with their regular meals.
  4. Calcium Source: Superworms contain moderate amounts of calcium, which is essential for maintaining strong bones and teeth in rats.

Risks and Precautions

While superworms can be a beneficial addition to your rat’s diet, there are some risks and precautions to consider:

  1. Obesity: Feeding too many superworms can lead to obesity in rats due to their high fat content. It is essential to monitor your rat’s weight and adjust their diet accordingly.
  2. Impaction: Superworms have a hard exoskeleton, which can be difficult for rats to digest. In some cases, this can lead to impaction, a potentially life-threatening condition where the digestive tract becomes blocked. To minimize this risk, consider feeding smaller superworms or crushing the exoskeleton before feeding.
  3. Bacterial Contamination: Like all live foods, superworms can carry bacteria, which can pose a risk to your rat’s health. Ensure that you purchase your superworms from a reputable source and store them properly to minimize this risk.
  4. Allergic Reactions: Some rats may be allergic to superworms or develop an allergy over time. If you notice any signs of an allergic reaction, such as swelling, difficulty breathing, or excessive itching, discontinue feeding superworms immediately and consult your veterinarian.
Can Rats Eat Superworms
Photo by Pixabay: https://www.pexels.com/photo/black-and-white-mouse-51340/

How to Feed Superworms to Your Rats

Choosing the Right Superworms

When selecting superworms for your rats, consider the following factors:

  • Size: Choose smaller superworms for younger or smaller rats, as they will be easier to digest and less likely to cause impaction.
  • Quality: Purchase your superworms from a reputable source to ensure they are healthy and free from harmful bacteria.
  • Storage: Store your superworms in a cool, dark place with proper bedding to keep them healthy and prolong their lifespan.

Preparing Superworms for Feeding

Before feeding superworms to your rats, there are a few steps you should take to ensure their safety and enjoyment:

  • Crushing the Exoskeleton: To minimize the risk of impaction, consider crushing the exoskeleton of the superworms before feeding them to your rats.
  • Gut Loading: Feed the superworms a healthy diet for 24 hours before feeding them to your rats. This process, known as gut loading, will ensure that the superworms pass on essential nutrients to your rats.
  • Washing: Rinse the superworms in clean water before feeding them to your rats to remove any dirt or debris.

Feeding Frequency and Portion Sizes

Superworms should be fed to your rats in moderation, with portion sizes and feeding frequency adjusted based on your rat’s age, size, and overall health. A general guideline is to feed 2-4 superworms per rat, 1-2 times per week. Consult your veterinarian for personalized recommendations based on your rat’s specific needs.

Alternatives to Superworms

If you are looking for alternatives to superworms, consider the following options:

  • Mealworms: Smaller and easier to digest than superworms, mealworms can be a good alternative for rats with a lower risk of impaction.
  • Crickets: Crickets are a popular choice for feeding rats, as they are high in protein and offer a similar hunting experience to superworms.
  • Other Insects: Rats can also consume other insects, such as waxworms, silkworms, and dubia roaches, which offer a variety of nutrients and textures.


In conclusion, rats can eat superworms, and they offer several nutritional benefits when fed in moderation. However, it is essential to consider the risks and precautions associated with feeding superworms to your rats and consult your veterinarian for personalized recommendations. By following proper feeding guidelines and offering a variety of insect options, you can provide your rats with a healthy, engaging, and stimulating diet.