Large Frogs and Toads Feeding Guide

Pacman Frogs have large appetites and will often continue trying to eat when food is offered, so their appetite should not be used as the only guide to portion size.

Dendrobaena should be used as one part of a varied diet, alongside other suitable prey. They do not need to make up the entire diet, and we recommend varying the types of live food offered rather than relying on Dendrobaena as the sole food source.

For adult Pacman Frogs, Dendrobaena can be offered as one of the frog’s regular weekly meals, with other suitable prey provided at other feedings. Juveniles require more frequent feeding while growing, so Dendrobaena can be included more regularly as part of their feeding routine.

Because individual Dendrobaena can vary considerably in size, we recommend weighing the worms rather than simply counting them. This provides a more consistent way of measuring the amount of food offered and makes it much easier to adjust portions over time.

Monitor your frog’s weight and body condition as it grows. If your frog is gaining excessive weight, reduce the total weight of Dendrobaena offered. If it is losing weight when it should be growing or maintaining its condition, the amount may need to be increased.

What Size Dendrobaena Should You Feed?

Choose a worm that can be swallowed comfortably and is no wider than the distance between the frog’s eyes. For Pacman Frogs, thickness is particularly important when judging whether a worm is suitable.

Veterinary guidance identifies an individual prey item weighing more than approximately 5% of an amphibian’s body weight as a potential risk factor for gastrointestinal obstruction or impaction. This is a general safety reference rather than a feeding limit established specifically for Pacman Frogs, and it should not be interpreted as a recommended meal size.

For example, 5% of a 100 g frog’s body weight is 5 g. This illustrates the size of the individual-prey threshold; it does not mean that 5 g of Dendrobaena should be offered at a feeding.

For adult Pacman Frogs, an individual Dendrobaena will generally represent a relatively small proportion of the frog’s body weight. The guideline is therefore more likely to be relevant when feeding smaller frogs, juveniles and froglets.

If a Dendrobaena is too long to feed whole, it can be cut into smaller pieces before feeding. Cutting can help with excessive length, but it does not make a worm suitable if it is too thick.

African Bullfrogs (Pyxicephalus adspersus), also known as Pixie Frogs, are large, ground-dwelling amphibians with exceptionally powerful feeding responses. They are opportunistic carnivores that naturally consume a variety of animal prey. Dendrobaena can be a useful part of their captive diet, providing a live earthworm that can be offered alongside other suitable feeder invertebrates.

How Often Should You Feed?

Juveniles: Feed once every day, adjusting the amount to the frog's size and growth.

Adults: Feed 2–3 times per week, adjusting the frequency and portion size according to body condition.

Young African Bullfrogs grow rapidly and need more frequent meals. Adults require more controlled feeding because they can become overweight when offered too much food. Their strong feeding response does not necessarily mean they need another meal.

These are general starting points. The appropriate routine will depend on the individual frog, its age, size, activity and body condition.

How Much Should You Feed?

African Bullfrogs have large appetites and may readily accept more food than they need. We recommend controlling portions rather than allowing the frog's feeding response to determine how much it receives.

Dendrobaena should form one component of a varied diet, alongside other suitable prey such as crickets, locusts and cockroaches. Earthworms can be a regular feeder, but we do not recommend relying on Dendrobaena as the sole food source.

For adult African Bullfrogs, Dendrobaena can be included in one or more of their regular weekly meals, with other suitable prey offered to provide variety. Juveniles can receive them more frequently as part of their daily feeding routine.

Because individual Dendrobaena vary considerably in size, we recommend weighing the worms rather than simply counting them. Weighing provides a more consistent measure of the food offered and makes it easier to adjust portions over time.

Monitor your frog's weight and body condition as it grows. If it begins gaining excessive weight, reduce the total amount of food offered, including the weight of Dendrobaena. If it is losing weight when it should be growing or maintaining its condition, review its overall feeding routine and husbandry.

What Size Dendrobaena Should You Feed?

Choose a worm that can be swallowed comfortably and is no wider than the distance between the frog's eyes. Although adult African Bullfrogs have exceptionally large mouths, prey should still be selected according to the size of the individual frog.

For younger frogs, juveniles and smaller individuals, worm thickness is particularly important. A worm that is too thick may be difficult to swallow, even if it is relatively short.

As a general safety reference, an individual prey item weighing more than approximately 5% of the frog's body weight may present a concern. This is not a limit validated specifically for African Bullfrogs, nor is it a recommended meal size. It is a cautious reference for considering the size of an individual prey item.

If a Dendrobaena is too long to feed whole, it can be cut into smaller pieces. Cutting can help with excessive length, but it does not make a worm suitable if it is too thick.

When Should You Feed?

African Bullfrogs are ambush predators and may spend long periods sitting partially buried while waiting for prey. They can feed readily when food is offered, but this does not mean they need to eat every time they show interest.

We recommend offering Dendrobaena during the frog's normal feeding routine, rather than feeding additional worms simply because it responds to movement.

Juveniles generally need daily feeding, while adults usually require fewer meals each week. Keep a consistent routine and adjust portions according to growth and body condition.

How Should You Feed the Worms?

We recommend using feeding tongs or a suitable feeding dish.

African Bullfrogs have powerful jaws and can strike rapidly at food. Feeding tongs allow you to present an individual Dendrobaena while keeping your fingers away from the frog's mouth. Use smooth, soft-tipped tongs where possible to reduce the risk of injury if the frog strikes them.

A shallow feeding dish can also be useful, particularly for smaller frogs. It keeps the worms visible and makes it easier to monitor how much has been eaten.

Avoid scattering worms over loose substrate. African Bullfrogs can accidentally swallow substrate while striking at prey, which may contribute to impaction. Controlled feeding makes it easier to keep the food separate from the bedding and remove anything uneaten.

Should You Feed Them in Water?

We recommend offering Dendrobaena on land rather than placing them in the water bowl.

African Bullfrogs are terrestrial and should have access to a suitable, clean soaking bowl. However, there is no need to put their food into the water.

Offering worms on a suitable feeding surface makes them easier to see and control. It also helps you identify and remove uneaten food without having to search through the water.

Preparing the Worms

Dendrobaena are normally kept in bedding to keep them healthy, so some coir or other bedding may remain on the worms when they are removed for feeding.

Before feeding, give the worms a gentle rinse to remove any loose bedding. This is particularly useful when offering them with tongs or in a feeding dish, as it reduces the amount of substrate that could otherwise be taken into the frog's mouth along with the worm.

There is no need to scrub the worms or try to remove every trace of bedding. A simple rinse is sufficient.

What About Supplements?

Dendrobaena should form part of a varied diet that provides the nutrients an African Bullfrog needs.

We recommend using a suitable calcium supplement and an appropriate vitamin and mineral supplement as part of the overall feeding routine. Follow the instructions supplied with the specific products, as their strengths and recommended application frequencies vary.

Supplementation is particularly important for growing frogs. The wider diet, including the other feeder species offered, should also be considered rather than relying on supplements to compensate for a limited range of foods.

What If My Frog Doesn't Eat?

African Bullfrogs often have a strong feeding response, so a sudden reluctance to eat may warrant checking their husbandry and general condition.

Try offering a Dendrobaena with tongs, allowing the worm to move naturally within the frog's view. If your frog does not take it, avoid repeatedly offering more worms simply to encourage a response.

If your frog persistently refuses food, particularly if it is losing weight, appears unusually inactive or shows other changes in behaviour, investigate the underlying husbandry or health issue. Seek advice from an exotic-animal veterinarian if the problem continues.

Removing Uneaten Worms

Remove any uneaten Dendrobaena after feeding rather than leaving them in the enclosure indefinitely.

This is particularly important in enclosures with loose substrate, where worms may disappear beneath the surface and become difficult to locate. A feeding dish or tongs makes it easier to monitor what has been eaten and remove anything that remains.

Healthy worms make healthy food. Storing your Dendrobaena worms correctly will keep them active, nutritious and in good condition until you’re ready to feed them.

Storing Your Worms

Dendrobaena worms are remarkably hardy when kept under suitable conditions. Store them in a cool, well-ventilated container with moist bedding, away from direct sunlight and extreme temperatures.

If you’re keeping them for more than a week before feeding, check them regularly and provide a small amount of suitable worm food if necessary. Healthy worms should remain active and firm, with the bedding kept moist but never waterlogged.

Removing any dead worms promptly will help maintain a healthy environment for the rest of the colony.

For more detailed advice, see our How To Store Dendrobaena Worms guide.