Hideouts for Roborovski hamsters: size guide

Good question — and it comes up a lot with Robos. The short answer is that a Syrian-sized hideout isn't necessarily harmful, but it does defeat the purpose: Roborovskis feel secure in snug spaces that mimic a burrow entrance, so a cavernous hide often gets ignored entirely. Before I point you in the right direction — how old is your Robo, do you have one or a pair, and are you shopping for an enclosed hide, a half-log type, or something specific you've already seen?

The plastic house is almost certainly the problem — Robos strongly prefer natural materials, and plastic tends to feel too exposed and smooth. Cork bark tubes are genuinely excellent for them. The key size for a solo Robo is an internal diameter of roughly 4–5cm, which feels snug without trapping her. What I'd recommend specifically is the JR Farm Cork Tube Small — it's a real cork bark segment, not a manufactured imitation, has a naturally narrow opening that Robos love, and is widely available on Amazon UK. She'll almost certainly use it both as a hide and to gnaw lightly, which is a bonus. One thing: buy two if you can and bury one partially in her bedding — Robos feel much safer entering a hide that's half-covered.

Leave both in for the first week. You want her to discover the cork tube on her own terms rather than feel like her only option changed overnight. Once you see her consistently using the cork tube — usually within a few days — you can take the plastic house out. If she's still splitting time between them after two weeks, the plastic house is fine to stay; some hamsters just aren't fussy. But most Robos make the switch pretty quickly once natural materials are introduced.

Yes — avoid anything with a single small entry hole that's also fully enclosed and smooth-sided, like those painted ceramic 'mushroom' houses. Robos can get stressed if they feel they can't exit quickly, and smooth interiors give them nothing to grip. Also skip fabric hammock-style hides; they're made for rats and degus and Robo claws can catch in the weave. Stick to cork, untreated wood, or natural coconut shell — those three materials cover almost everything she'll actually want.