Double Rex
Rat · 0 live listings
A double rex rat carries two copies of the rex gene, giving a sparse, patchy coat that grows in and falls out in cycles. The thin coat means less protection from cold and scratches, so a double rex needs a warmer room and softer cage furnishings.
At a glance
The tradeoffs, honestly
Patchy fur means more cold sensitivity and visible scratches from cagemates. Short lifespans, respiratory disease and tumours apply as with any rat.
Common questions
How do I keep a double rex comfortable?
Keep the room warm and draft-free, give fleece hammocks and deep bedding, and watch for scratches from cagemates. They may eat a little more to stay warm.
What health checks should I ask about?
Ask about respiratory health in the line: nearly all rats carry mycoplasma, so sneezing, clicking breaths or porphyrin (red) staining are red flags. Ask about tumours in older relatives, request vet-confirmed sex and a litter record, and find an exotics vet before you bring rats home.
Is a double rex the same as hairless?
No. A double rex grows patchy fur in cycles, while a true hairless rat stays mostly bare. Both need extra warmth, but they come from different genes.
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