Dung beetles are fascinating creatures that make surprisingly rewarding pets for entomology enthusiasts. These industrious insects play a vital role in ecosystems worldwide, and with proper care, they can thrive in captivity. Whether you're a seasoned keeper or just starting out, this guide will help you provide the best possible environment for your dung beetles.
Choosing Your Species
Before setting up your enclosure, it's important to select a species suited to your experience level and local climate. Some popular choices for beginners include the Rainbow Scarab (Phanaeus vindex) and the common Geotrupes species. These are hardy, relatively easy to care for, and display interesting behaviours. More experienced keepers might consider the impressive African Dung Beetle (Scarabaeus sacer) or the stunning jewel-toned Copris species.
Housing Requirements
Enclosure Size and Type
Dung beetles require a surprisingly deep substrate to exhibit their natural tunnelling behaviours. A minimum enclosure size of 30cm × 30cm × 40cm (depth) is recommended for a small colony. Glass or plastic terrariums work well, but ensure adequate ventilation whilst maintaining humidity. Many keepers opt for modified storage containers with mesh-covered ventilation holes.
Substrate
The substrate is arguably the most critical element of your dung beetle enclosure. You'll need:
- A base layer of organic, pesticide-free topsoil or coco coir (at least 20–25cm deep)
- A mixture of sand and soil for species that prefer drier conditions
- Leaf litter on top for added enrichment and humidity retention
- Some keepers add rotting wood for species that appreciate it
Compact the substrate lightly to help it hold tunnels, but leave the top layer loose for easier digging.
Temperature and Humidity
Most dung beetle species thrive at temperatures between 20–28°C, though this varies by species origin. Tropical species require the higher end of this range, whilst temperate species are comfortable at cooler temperatures.
Humidity should generally be maintained between 60–80%. Use a digital hygrometer to monitor conditions, and mist the enclosure as needed. Avoid waterlogging the substrate, as this can lead to mould growth and harm your beetles.
Feeding Your Dung Beetles
As their name suggests, dung beetles feed primarily on animal dung. The type of dung you provide will depend on your species:
- Herbivore dung (horse, cow, rabbit, elephant) is preferred by most species and is generally the safest option
- Omnivore dung (pig, dog) can be used for some species but may contain parasites
- Avoid dung from animals that have been recently wormed or given antibiotics, as residues can be harmful
Provide fresh dung every few days, removing old material to prevent excessive mould. A golf ball–sized portion is typically sufficient for a small colony. Some species will also accept overripe fruit as a supplementary food source.
Breeding
Dung beetles have fascinating reproductive behaviours. Most species create "brood balls" – carefully shaped spheres of dung in which they lay a single egg. The larva develops inside, feeding on the dung until it pupates and emerges as an adult.
To encourage breeding, ensure your beetles have access to plenty of fresh dung and deep substrate for tunnelling. Keep the temperature stable and humidity adequate. Some species are seasonal breeders, so patience may be required.
Health and Maintenance
Signs of a Healthy Beetle
- Active movement and tunnelling behaviour
- Shiny, intact exoskeleton
- Strong grip when handled
- Regular feeding activity
Common Issues
Mites: Small populations are normal, but infestations can stress beetles. Reduce humidity slightly and ensure good ventilation. Springtails can be added as a clean-up crew to help control mites.
Mould: Usually caused by excessive moisture. Improve ventilation and allow the substrate surface to dry slightly between misting.
Lethargy: Could indicate temperature issues, old age, or illness. Check environmental conditions first.
Cleaning
Spot-clean the enclosure weekly, removing old dung and any mouldy material. A full substrate change is typically only needed every few months, though this depends on colony size.
Handling
Dung beetles can be handled gently, though they don't require regular handling and may find it stressful. When you do handle them, support their body from beneath and allow them to walk across your hands. Their claws are adapted for digging and can grip firmly, so move slowly and let them release naturally rather than pulling them off surfaces.
Conclusion
Dung beetles are low-maintenance, endlessly entertaining pets that offer a window into one of nature's most important recycling systems. With the right setup and consistent care, your beetles can live for several years and may even produce multiple generations. Their tunnelling behaviour, ball-rolling antics, and surprising intelligence make them a joy to observe.
Happy beetle keeping!