Bug Pets

Live invertebrates kept as companion animals have quietly become one of the UK’s fastest-growing pet trends. If you’ve been curious about keeping beetles, mantids, or millipedes at home, this guide covers everything you need to know—from choosing the right species to understanding basic care requirements and legal considerations.

What Are Bug Pets?

Bug pets are live invertebrates—including insects, arachnids, myriapods, and other small creatures—kept as companion animals in controlled home environments. Think stick insects perched on bramble, iridescent beetles burrowing through substrate, or isopods scuttling across leaf litter. These are not digital toys, plastic figures, or branded game apps. They’re real, living animals that require specific care.

The category includes a surprisingly diverse selection of species:

  • Insects (beetles, mantids, stick insects, cockroaches)

  • Arachnids (tarantulas, scorpions)

  • Myriapods (millipedes, centipedes)

  • Crustaceans (isopods, commonly called woodlice or “pill bugs”)

Since around 2018, bug pets have surged in popularity across the UK, US, and Europe. Social media platforms like Instagram, YouTube unboxing videos, and classroom science projects have introduced millions of people to the hobby. The UK’s exotic pet community now includes thousands of active keepers who share their setups, breeding successes, and care tips online.

What sets bug pets apart from traditional animals? They require far less space—many species thrive in enclosures the size of a shoebox. Costs stay low, with some species available for under £10. However, they demand precise environmental control: specific humidity levels, temperature gradients, and appropriate substrates. Lifespans vary dramatically too, from a few months for adult beetles to several years for tarantulas.

A child is safely observing a beetle inside a clear, ventilated plastic container placed on a desk, showcasing their interest in pet invertebrates. The scene captures the child's curiosity while ensuring the beetle's well-being in a suitable environment.

Definition: Bug pets are captive-bred or ethically sourced live invertebrates kept in controlled enclosures as companion animals, distinct from wild insects and from toy products using similar names.

Are Bug Pets Right for You?

Before you order your first livestock, it helps to honestly assess whether bug pets suit your lifestyle. This quick evaluation will save you time and ensure your future pets receive proper care.

Key suitability factors to consider:

  • Available space: Most species need only shelf-sized terrariums (10–30 litres), but you’ll need room for heating equipment and substrate storage

  • Environmental maintenance: Can you commit to daily misting, temperature monitoring, and weekly enclosure checks?

  • Live feeders: Some species require live crickets, roaches, or fruit flies—are you comfortable handling these?

  • Handling expectations: Many bug pets are observation-only; direct handling can stress or harm them

Who bug pets suit best:

  • Families with children: Educational value is immense, but adult supervision remains essential for feeding and maintenance

  • Adult hobbyists: Breeding projects and species-keeping offer deep engagement for those who enjoy detailed animal husbandry

  • Classrooms and science clubs: Stick insects and beetles align perfectly with biology curriculum on life cycles and ecology

Pros:

  • Quiet—no barking, squawking, or nocturnal wheel-running

  • Minimal smell when enclosures are properly maintained

  • Fascinating natural behaviours to observe

  • Low daily time commitment (typically 5–10 minutes)

  • You can shop equipment without breaking the bank

Cons:

  • Some species are fragile with short adult lifespans (mantids live 1–2 years maximum)

  • Carnivorous species need live prey, which requires separate feeder colonies or regular purchases

  • Most cannot be handled safely or enjoyably

  • Cold weather shipping requires careful timing and insulated packaging

Quick Checklist: Is This Hobby For You?

  • [ ] I have stable shelf or desk space away from direct sunlight

  • [ ] I can maintain consistent room temperatures or invest in heating

  • [ ] I’m comfortable with live insects (as pets or feeders)

  • [ ] I understand these are observation pets, not cuddly companions

  • [ ] I’m willing to research species-specific needs before purchasing

Popular Types of Bug Pets

Choosing your first species matters enormously. This section outlines beginner-friendly options commonly sold by reputable UK and EU breeders, giving you a solid starting point for research.

Beetles

Beetles offer some of the most visually striking bug pets available. The Rainbow Stag Beetle (Phalacrognathus muelleri) displays iridescent green and red colouration, reaching 4–7 cm in length. The Dorcus titanus can exceed 8 cm with impressive mandibles. Even the UK-native Stag Beetle (Lucanus cervus) captivates keepers with its antler-like jaws.

Beetle keeping has a unique rhythm: larvae spend 1–3 years developing in decaying wood substrate before pupating into adults that may live only a few months. The extended larval stage appeals to people who enjoy long-term projects.

Mantids

Praying mantids are ambush predators with extraordinary visual appeal. The Orchid Mantis (Hymenopus coronatus) mimics flower petals in pink and white, while the Ghost Mantis (Phyllocrania paradoxa) resembles dried leaves. Adults typically reach 5–8 cm depending on species.

Mantids require live prey—fruit flies for nymphs, graduating to crickets and locusts for adults. They’re not beginner-friendly in the sense of being hands-off; feeding schedules and humidity must stay consistent. However, their hunting behaviour makes them endlessly watchable.

Stick and Leaf Insects

For supervised children and absolute beginners, stick insects are often the ideal first choice. The Indian Stick Insect (Carausius morosus) reproduces parthenogenetically (females lay fertile eggs without males), making colonies easy to maintain. The Giant Prickly Stick Insect (Extatosoma tiaratum) grows to 15 cm and tolerates gentle handling.

These herbivores eat bramble, ivy, and oak leaves—food sources you can forage for free in most UK gardens. Their gentle nature and simple care requirements make them great classroom animals.

Isopods

Isopods have exploded in popularity as both pets and “clean-up crew” for bioactive terrariums, reflecting the wider rise in popularity of isopods among invertebrate keepers. Species like “Rubber Ducky” isopods, various Armadillidium species, and colourful Porcellio scaber morphs breed readily in captivity. .

At 1–3 cm, they’re small but come in extraordinary colour variations: orange, purple, spotted, and striped, with many colourful and attractive isopod species to keep as a pet now widely available in the hobby. They eat decaying organic matter, making maintenance straightforward—just provide leaf litter, calcium (cuttlebone), and consistent humidity. .

Advanced Options

Tarantulas and scorpions represent the hobby’s advanced tier. While species like the Chilean Rose Tarantula (Grammostola rosea) are considered docile and beginner-appropriate by some, others carry medical significance. Some US states and parts of Australia restrict their keeping by law. Research thoroughly before considering these species.

A vibrant orchid mantis, with its striking colors, is delicately perched on a lush green leaf inside a terrarium, showcasing the beauty of pet invertebrates. This species adds a unique touch to any collection, perfect for enthusiasts looking to order from the UK's online invertebrate superstore.

Basic Care Requirements for Bug Pets

This section provides a high-level practical overview. Detailed care varies significantly by species—always verify requirements before you add any animal to your account.

Enclosure Basics

  • Use secure, well-ventilated plastic or glass containers

  • Size guidance: minimum 3× body length in both width and height for most insects

  • Mesh or ventilated lids prevent escapes while maintaining airflow

  • Vertical space matters for climbing species (mantids, stick insects)

  • Horizontal space suits ground-dwellers (beetles, isopods), especially if you plan on keeping isopods with live plants in a bioactive terrarium. )

Substrate Types

  • Coco fibre: Retains humidity well, suits tropical species

  • Leaf litter: Decayed oak or beech leaves provide food and hiding spots for detritivores

  • Rotten wood: Essential for beetle larvae development

  • Paper towel: Budget option for temporary housing or quarantine

  • Soil mixes: Combination substrates work well for isopods and millipedes, and are a core part of setups for the best isopods for the planted terrarium.

Temperature and Humidity

  • Tropical beetles: 22–26°C, humidity 60–80%

  • Temperate species: 15–20°C, lower humidity acceptable

  • Most mantids: 22–28°C depending on species origin

  • Isopods: Room temperature (18–24°C), humidity 70–80% in moist zones

Invest in a digital thermometer-hygrometer—they’re inexpensive and prevent 90% of humidity-related problems.

Feeding Requirements

  • Herbivores (stick insects): Fresh bramble, oak, ivy; replace every 2–3 days

  • Detritivores (beetles, isopods): Leaf litter, decaying wood, vegetables; add cuttlebone for calcium—this diet underpins many of the benefits of keeping isopods as natural clean-up crews in small enclosures.

  • Carnivores (mantids): Live prey sized appropriately—fruit flies for nymphs, crickets/locusts for adults

Routine Maintenance

  • Mist enclosures daily or every other day depending on species needs

  • Remove uneaten food within 24–48 hours to prevent mould

  • Spot-clean waste weekly

  • Check ventilation points and lids for security

  • Monitor for mites or mould, which indicate excess moisture; in established bioactive setups, you may also keep an eye on your clean-up crew and learn whether isopods will overpopulate a terrarium or vivarium.

When you order livestock from a reputable online invertebrate superstore, animals are typically shipped with care instructions specific to the species. Many suppliers offer a 7 day live guarantee and ships within 3 days of ordering, excluding pre order items bank holidays and price matched products.

Safety, Ethics, and Legal Considerations

Bug pets are living animals deserving humane treatment. Whether purchased in a shop or shipped to your door, they require responsible ownership throughout their lives.

Safety First

  • Beginners and families with children should avoid venomous or medically significant species

  • Old World tarantulas and certain scorpions can deliver painful, potentially dangerous stings or bites

  • Stick with established beginner species until you’ve gained experience

Allergy and Hygiene Risks

  • Some people react to proteins in feeder insects (crickets, mealworms)

  • Frass (insect waste) can trigger sensitivities in enclosed spaces

  • Always wash hands thoroughly after handling enclosures or feeders

  • Work in well-ventilated areas when maintaining colonies

Legal Requirements

  • UK keepers must not release non-native species into the wild under Invasive Alien Species regulations

  • Some species require CITES documentation for import/export

  • Approximately 15% of hobbyists face complications when importing restricted species—check before purchasing

  • US regulations vary by state; some ban certain scorpions and tarantulas entirely

Ethical Sourcing

  • Purchase captive-bred species wherever possible

  • Reputable sellers clearly list the origin of their stock

  • Avoid wild-caught specimens from threatened habitats

  • Look for suppliers offering a refund window for health issues—a 7 day refund window for health demonstrates seller confidence in their animals

Responsible Rehoming

  • Never release unused feeder insects outside—they can become invasive

  • If you can no longer care for a colony, contact local keepers or breeders for rehoming

  • Some species (particularly isopods) can be sold or traded within hobbyist communities

Important: The window for health issues after delivery is typically 7 days. Document any problems immediately with photos and contact your supplier within this timeframe.

Educational and Enjoyment Benefits of Bug Pets

Beyond their visual appeal, bug pets connect people to nature, ecology, and the fascinating mechanics of life cycles in ways few other hobbies can match.

Understanding Metamorphosis

Observing the complete transformation from egg to larva to pupa to adult—as seen in stag beetles and rhinoceros beetles—brings textbook biology to life. Children and adults alike gain intuitive understanding of developmental stages that static images simply cannot convey.

Classroom Applications

Many UK primary schools and science clubs use stick insects and beetles as classroom pets, and some also introduce isopods after learning what isopods you can buy for a terrarium or classroom vivarium. These animals align with Key Stage biology objectives around life cycles, habitats, and classification. A 2022 case study from the Entomological Society of America found that 85% of students reported increased interest in STEM subjects after maintaining Madagascar hissing cockroach colonies over 18 months. .

Mental Well-being

The slow, deliberate movements of stick insects or the patient hunting behaviour of mantids encourage focused observation. Many keepers find this calming—a form of mindful engagement that contrasts sharply with screen-based entertainment. Maintaining detailed logs of moults, breeding events, and feeding schedules creates structured routines that suit people seeking grounding activities.

Turning the Hobby into Research

Simple tools transform casual keeping into meaningful projects:

  • Notebooks or apps to record moult dates, egg-laying, and emergence

  • Temperature and humidity logs to correlate with breeding success

  • Photography to document growth stages and colour variations

Connecting with Other Keepers

Follow accounts on Instagram or join specialist forums to share observations and learn responsible practices. The community welcomes newcomers enthusiastically, and experienced keepers freely share advice on everything from substrate recipes to identifying species from photos, as well as recommending top isopod species for your collection as you expand your setups. .

A hand is holding an open notebook filled with handwritten observations, positioned next to a small terrarium housing isopods, which are popular pet invertebrates. The scene captures the essence of caring for livestock, showcasing the attention to detail that comes with observing these unique species.


Bug pets offer a genuinely rewarding hobby for people willing to research species-specific needs and commit to consistent care. They’re quiet, affordable, and endlessly fascinating to observe. Whether you’re drawn to the iridescent shimmer of a Rainbow Stag Beetle or the alien elegance of a Ghost Mantis, there’s a species to suit almost any interest level.

Start small. Choose a beginner-friendly species, source from ethical suppliers, and stay curious. The more time you invest in understanding these remarkable animals, the more they’ll reward your attention. And who knows—what begins as a single stick insect might evolve into a multi-species collection that keeps you learning for years to come.

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