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Top 6 Modular Expandable Cage Systems in Canada (2025): Expert-Backed Picks to Customize, Expand, and Enrich Small Animal Habitats

Published on Thursday, August 21, 2025

Modular expandable cage systems are flexible enclosures built from panels, tubes, and connectors that let owners customize and grow habitats for small animals such as hamsters, gerbils, guinea pigs, rabbits, ferrets, and pet rats. These systems appeal to Canadian pet owners because they solve common challenges — they adapt to limited living space, allow multi-tier stacking for vertical enrichment, and make it easy to add or remove zones as pets grow or household needs change. Buyers also value robust, weather-resistant materials for year-round indoor use, easy-clean designs for hygiene in multi-pet homes, and accessories that support exercise, nesting, and foraging behavior. For 2025, demand in Canada continues to favor modular systems that balance safety, ventilation, and customizable enrichment while remaining simple to assemble and compatible with regional retailers and shipping options.

Top Picks Summary

1. Modular Cage Systems for Rabbits Small Pet Cages and Hutches

2. Modular Cage Systems for Guinea Pigs Small Pet Cages and Hutches

3. Modular Cage Systems for Hamsters and Gerbils Small Pet Cages

4. Modular Cage Systems for Ferrets and Chinchillas Small Pet Cages

5. Modular Stackable Module Kits for Small Pet Cages and Hutches

6. Modular Extension and Connector Kits for Small Pet Cages and Hutches

Top Picks Summary

  1. Krolik 160 Rabbit Cage
  2. Kaytee My First Home Tank Topper
  3. Habitrail OVO Home
  4. Living World Deluxe Habitat XL
  5. MidWest Critterville Arcade Hamster Home
  6. Habitrail OVO Adventure Pack
1
BEST MODULAR CAGE SYSTEMS FOR RABBITS SMALL PET CAGES AND HUTCHES

Krolik 160 Rabbit Cage

Ferplast

The Krolik 160 stands out as a specialist, rabbit-focused modular cage with closely spaced wire, robust frame construction, and strong stackability aimed at breeders and serious rabbit owners who value technical durability. Its European engineering and heavier gauge materials provide a longer service life than many mass-market models, though that quality can mean higher upfront cost and increased shipping expense outside its regional market. In a modular systems comparison it offers superior containment and expansion rigidity versus lighter domestic plastic-base units, making it a technical leader for intensive use.

4.4
★★★★☆
Show More Modular Cage Systems for Rabbits Small Pet Cages and Hutches
  • Multi-level condo (bunny loft)

  • Sturdy metal frame (built tough)

  • Multi-level condo (bunny loft)

  • Sturdy metal frame (built tough)

Review Summary

88%

"Users rate the Krolik 160 highly for its sturdy construction, configurable modular design, and ease of cleaning, with only occasional critiques about higher price and weight. Frequent long-term users report reliable durability and good value for multi-level setups."

  • Removable tray (fast cleanup)

  • Robust welded-wire construction designed for rabbit welfare

  • Removable tray (fast cleanup)

  • Robust welded-wire construction designed for rabbit welfare

Increased Safety & Security

Time-Saving Convenience

The Krolik 160 stands out as a specialist, rabbit-focused modular cage with closely spaced wire, robust frame construction, and strong stackability aimed at breeders and serious rabbit owners who value technical durability. Its European engineering and heavier gauge materials provide a longer service life than many mass-market models, though that quality can mean higher upfront cost and increased shipping expense outside its regional market. In a modular systems comparison it offers superior containment and expansion rigidity versus lighter domestic plastic-base units, making it a technical leader for intensive use.

  • Multi-level condo (bunny loft)

  • Sturdy metal frame (built tough)

  • Removable tray (fast cleanup)

  • Robust welded-wire construction designed for rabbit welfare

  • Stackable modular units with integrated run options

  • Multi-level condo (bunny loft)

  • Sturdy metal frame (built tough)

  • Removable tray (fast cleanup)

  • Robust welded-wire construction designed for rabbit welfare

  • Stackable modular units with integrated run options

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From 217.79$
2
BEST MODULAR CAGE SYSTEMS FOR GUINEA PIGS SMALL PET CAGES AND HUTCHES

Kaytee My First Home Tank Topper

Kaytee

Kaytee’s My First Home Tank Topper is a cost-effective way to turn an aquarium into a secure guinea pig habitat with excellent visibility and a tight wire mesh top that resists escape and chewing. Compared with full modular cage systems, the tank-topper route is typically the most budget-friendly and visually accessible, though it trades some ventilation and modular-panel expandability for simplicity and clarity of view.

3.4
★★★☆☆
Show More Modular Cage Systems for Guinea Pigs Small Pet Cages and Hutches
  • Aqua-top playground

  • Low-profile cozy

  • Aqua-top playground

  • Low-profile cozy

Review Summary

68%

"Kaytee My First Home Tank Topper is valued as an inexpensive, simple topper solution for small pets and tanks, yet reviewers report flimsy plastic, tricky assembly, and that it's generally too small or not sturdy enough for adult guinea pigs."

  • Hassle-free setup

  • Designed to convert an aquarium into a ventilated small pet habitat with a fitted topper

  • Hassle-free setup

  • Designed to convert an aquarium into a ventilated small pet habitat with a fitted topper

Recreational Enjoyment

Time-Saving Convenience

Kaytee’s My First Home Tank Topper is a cost-effective way to turn an aquarium into a secure guinea pig habitat with excellent visibility and a tight wire mesh top that resists escape and chewing. Compared with full modular cage systems, the tank-topper route is typically the most budget-friendly and visually accessible, though it trades some ventilation and modular-panel expandability for simplicity and clarity of view.

  • Aqua-top playground

  • Low-profile cozy

  • Hassle-free setup

  • Designed to convert an aquarium into a ventilated small pet habitat with a fitted topper

  • Low-profile modular panels allow for easy access and simple customization

  • Aqua-top playground

  • Low-profile cozy

  • Hassle-free setup

  • Designed to convert an aquarium into a ventilated small pet habitat with a fitted topper

  • Low-profile modular panels allow for easy access and simple customization

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From 79.47$
3
BEST MODULAR CAGE SYSTEMS FOR HAMSTERS AND GERBILS SMALL PET CAGES

Habitrail OVO Home

Habitrail
🏠 Local Product

The Habitrail OVO Home stands out as the most customizable, exploration-focused modular system for small pet cages, using transparent tubes and bubble modules that encourage natural curiosity in hamsters and gerbils. Technically optimized for vertical expansion and visual engagement, it is more playful and expandable than entry-level cages, though it can require more maintenance; financially it appeals to owners who want modular add-ons over a single large investment.

4.1
★★★★☆
Show More Modular Cage Systems for Hamsters and Gerbils Small Pet Cages
  • Bubble-view wonder

  • Smooth-airflow pods

  • Bubble-view wonder

  • Smooth-airflow pods

Review Summary

75%

"The Habitrail OVO Home is praised for its sleek, clear modular design and enrichment potential, though reviewers frequently note limited ventilation, awkward cleaning, and that the footprint is small for long-term housing. Owners who use it as part of a larger setup or for short-term/show display are most satisfied."

  • Interchangeable spheres

  • Clear bubble modules provide excellent visibility of your pet at play.

  • Interchangeable spheres

  • Clear bubble modules provide excellent visibility of your pet at play.

Recreational Enjoyment

Skill Development & Mastery

The Habitrail OVO Home stands out as the most customizable, exploration-focused modular system for small pet cages, using transparent tubes and bubble modules that encourage natural curiosity in hamsters and gerbils. Technically optimized for vertical expansion and visual engagement, it is more playful and expandable than entry-level cages, though it can require more maintenance; financially it appeals to owners who want modular add-ons over a single large investment.

  • Bubble-view wonder

  • Smooth-airflow pods

  • Interchangeable spheres

  • Clear bubble modules provide excellent visibility of your pet at play.

  • Designed to connect with Habitrail tunnels and larger Habitrail systems for expansion.

  • Bubble-view wonder

  • Smooth-airflow pods

  • Interchangeable spheres

  • Clear bubble modules provide excellent visibility of your pet at play.

  • Designed to connect with Habitrail tunnels and larger Habitrail systems for expansion.

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From 58.60$
4
BEST MODULAR CAGE SYSTEMS FOR FERRETS AND CHINCHILLAS SMALL PET CAGES

Living World Deluxe Habitat XL

Living World
🏠 Local Product

The Living World Deluxe Habitat XL is a plastic-based modular habitat that excels for chinchillas and other small pets that benefit from enclosed platforms, quieter operation and easy-to-clean trays, all at a lower purchase price. While it is more portable and often less expensive than metal welded-wire systems like the Ferret Nation or Critter Nation, it is generally less durable and less configurable for heavy-chewing or highly active ferrets, making it a specialist, budget-conscious option for smaller or less destructive animals.

3.6
★★★☆☆
Show More Modular Cage Systems for Ferrets and Chinchillas Small Pet Cages
  • Multi-level platforms

  • Escape-proof latches

  • Multi-level platforms

  • Escape-proof latches

Review Summary

67%

"Reasonable for small rodents or temporary housing, with a solid plastic base and wire top, but reviewers say it’s too small and not robust enough for ferrets or chinchillas long-term, and has limited access and ventilation for larger active pets."

  • Chinchilla condo charm

  • All-in-one plastic modular panels and connectors that are lightweight and easy to assemble.

  • Chinchilla condo charm

  • All-in-one plastic modular panels and connectors that are lightweight and easy to assemble.

Increased Safety & Security

Recreational Enjoyment

The Living World Deluxe Habitat XL is a plastic-based modular habitat that excels for chinchillas and other small pets that benefit from enclosed platforms, quieter operation and easy-to-clean trays, all at a lower purchase price. While it is more portable and often less expensive than metal welded-wire systems like the Ferret Nation or Critter Nation, it is generally less durable and less configurable for heavy-chewing or highly active ferrets, making it a specialist, budget-conscious option for smaller or less destructive animals.

  • Multi-level platforms

  • Escape-proof latches

  • Chinchilla condo charm

  • All-in-one plastic modular panels and connectors that are lightweight and easy to assemble.

  • Built-in platforms, ramps and accessory mounting points for enrichment.

  • Multi-level platforms

  • Escape-proof latches

  • Chinchilla condo charm

  • All-in-one plastic modular panels and connectors that are lightweight and easy to assemble.

  • Built-in platforms, ramps and accessory mounting points for enrichment.

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From 244.99$
5
BEST MODULAR STACKABLE MODULE KITS FOR SMALL PET CAGES AND HUTCHES

MidWest Critterville Arcade Hamster Home

MidWest Homes for Pets

MidWest's Critterville Arcade Hamster Home brings whimsical, theme-driven modular pieces that are affordable and appealing as add-ons for custom small-pet setups, particularly for hamsters and gerbils. Technically less heavy-duty than Ferplast or some Prevue units, MidWest modules shine as low-cost, visually engaging expansions that complement mid-range Living World or starter Kaytee systems without the higher price tag of premium modular platforms.

3.8
★★★☆☆
Show More Modular Stackable Module Kits for Small Pet Cages and Hutches
  • Tubed arcade

  • Space-saving compact

  • Tubed arcade

  • Space-saving compact

Review Summary

72%

"Shoppers like the playful, compact design, but frequent criticisms are that it’s too small, can be awkward to clean, and is not the most durable choice for heavy use by active hamsters."

  • Arcade vibes

  • Multi-level arcade-style layout with tunnels and connector ports for expansion

  • Arcade vibes

  • Multi-level arcade-style layout with tunnels and connector ports for expansion

Recreational Enjoyment

Time-Saving Convenience

MidWest's Critterville Arcade Hamster Home brings whimsical, theme-driven modular pieces that are affordable and appealing as add-ons for custom small-pet setups, particularly for hamsters and gerbils. Technically less heavy-duty than Ferplast or some Prevue units, MidWest modules shine as low-cost, visually engaging expansions that complement mid-range Living World or starter Kaytee systems without the higher price tag of premium modular platforms.

  • Tubed arcade

  • Space-saving compact

  • Arcade vibes

  • Multi-level arcade-style layout with tunnels and connector ports for expansion

  • Made for quick linking to other Critterville modules to build towers and mazes

  • Tubed arcade

  • Space-saving compact

  • Arcade vibes

  • Multi-level arcade-style layout with tunnels and connector ports for expansion

  • Made for quick linking to other Critterville modules to build towers and mazes

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From 102.74$
6
BEST MODULAR EXTENSION AND CONNECTOR KITS FOR SMALL PET CAGES AND HUTCHES

Habitrail OVO Adventure Pack

Habitrail
🏠 Local Product

The Habitrail OVO Adventure Pack is the design-forward option, featuring distinctive egg-shaped modules and curved tunnels that maximize interior play space and airflow for small rodents. It commands a premium because of its unique shapes and refined airflow/visibility features, and while it integrates best within the Habitrail ecosystem (making it less universally compatible than Ware or Kaytee), it provides a compact, high-performance solution for owners focused on enrichment and aesthetics.

4.3
★★★★☆
Show More Modular Extension and Connector Kits for Small Pet Cages and Hutches
  • Sleek bubble tunnels

  • Designer egg pods

  • Sleek bubble tunnels

  • Designer egg pods

Review Summary

83%

"Owners appreciate the Habitrail OVO Adventure Pack's sleek design and space-efficient layout, with long-term users praising durability, though tunnels are tight for larger hamsters and assembly can be fiddly."

  • Twisty exploration

  • Curved tubes, pods, and connectors tailored for Habitrail OVO enclosures

  • Twisty exploration

  • Curved tubes, pods, and connectors tailored for Habitrail OVO enclosures

Recreational Enjoyment

Skill Development & Mastery

The Habitrail OVO Adventure Pack is the design-forward option, featuring distinctive egg-shaped modules and curved tunnels that maximize interior play space and airflow for small rodents. It commands a premium because of its unique shapes and refined airflow/visibility features, and while it integrates best within the Habitrail ecosystem (making it less universally compatible than Ware or Kaytee), it provides a compact, high-performance solution for owners focused on enrichment and aesthetics.

  • Sleek bubble tunnels

  • Designer egg pods

  • Twisty exploration

  • Curved tubes, pods, and connectors tailored for Habitrail OVO enclosures

  • Low-profile modular elements suit table-top or smaller habitats

  • Sleek bubble tunnels

  • Designer egg pods

  • Twisty exploration

  • Curved tubes, pods, and connectors tailored for Habitrail OVO enclosures

  • Low-profile modular elements suit table-top or smaller habitats

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$30-60 CAD

Explore More
  • Modular Cage Systems for Rabbits Small Pet Cages and Hutches
  • Modular Cage Systems for Guinea Pigs Small Pet Cages and Hutches
  • Modular Cage Systems for Hamsters and Gerbils Small Pet Cages
  • Modular Cage Systems for Ferrets and Chinchillas Small Pet Cages
  • Modular Stackable Module Kits for Small Pet Cages and Hutches
  • Modular Extension and Connector Kits for Small Pet Cages and Hutches

What research says about modular habitats and small-animal welfare

Peer-reviewed animal behavior and welfare research shows that space, environmental complexity, and the ability to control shelter and social interactions are important for the health and welfare of small mammals. Modular systems support these factors because they permit owners to add floor area, create separate zones, and introduce varied substrates and enrichment items. Below are beginner-friendly highlights from the scientific literature and practical takeaways you can apply when choosing a modular cage.

Environmental enrichment reduces stress and repetitive behaviors: Studies published in journals such as Applied Animal Behaviour Science and Journal of Applied Animal Welfare Science report that increased complexity (tunnels, platforms, hiding spaces) lowers signs of stress and stereotypy in small mammals.

Adequate space supports physical health and social housing: Research indicates that increased usable area and vertical space improve activity levels, reduce aggressive interactions among social species, and support better musculoskeletal development — benefits modular systems can deliver when expanded appropriately.

Rotational enrichment keeps animals engaged: Evidence suggests rotating toys, hides, and layout changes prevents habituation and promotes natural exploratory behavior; modular setups make rotation and reconfiguration simple.

Separation and compartmentalization reduce disease and conflict: Modular designs allow temporary separation for sick or aggressive individuals without needing a second full enclosure, which aligns with best-practice welfare recommendations.

Materials and ventilation matter: Scientific and veterinary guidance emphasize non-toxic materials, smooth edges, and adequate airflow to prevent respiratory issues and injuries — look for systems with tested connectors and open-grid panels that still block escape.

Beginner takeaway: prioritize a modular system that lets you increase floor area, add hiding/nesting zones, and provides secure, ventilated panels. Combine expansion with a rotation plan for toys and substrates to maximize welfare benefits.

In Canada, modular expandable cages are a practical, welfare-minded choice for growing small pets and multi-pet households — especially where housing or seasonal indoor living requires flexible solutions. We hope this guide helped you understand the benefits and what to look for in 2025; if you need a narrower list, use the site search to filter by species, footprint, materials, price, or Canadian retailers to find the perfect modular system for your home.

Discover More
  • Modular Cage Systems for Rabbits Small Pet Cages and Hutches
  • Modular Cage Systems for Guinea Pigs Small Pet Cages and Hutches
  • Modular Cage Systems for Hamsters and Gerbils Small Pet Cages
  • Modular Cage Systems for Ferrets and Chinchillas Small Pet Cages
  • Modular Stackable Module Kits for Small Pet Cages and Hutches
  • Modular Extension and Connector Kits for Small Pet Cages and Hutches

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