Is the Selkirk Rex Longhair Cat Hypoallergenic? Curly Coat, Same Fel d 1 Reality

No, despite the unusual curly coat. Selkirk Rex Longhair cats score 3.5 out of 10 on the Hypoallergenic Score, placing them in the Low-allergen at best band. The dense, plush, curly coat sheds moderately and traps some dander, but it also holds allergen-laden saliva close to the skin. The cat's constant grooming releases Fel d 1 into the air through shed hair and dander. The ACAAI states that no cat breed has been proven to be hypoallergenic. People with mild, well-controlled cat allergy may manage with strict environmental controls; those with moderate-to-severe allergy or allergic asthma should consult an allergist before adopting.

Moderately. The Selkirk Rex Longhair has a dense, plush, curly coat that sheds at a moderate rate. The curly texture means shed hair sometimes clumps together rather than spreading individually, which can make the shed less visible on furniture. However, the shed hair and dander still release Fel d 1 into the environment. Regular brushing is needed to prevent matting, and the brushing itself can aerosolize dander and dried saliva. The shed rate is similar to other medium-haired cats and lower than heavy-shedding breeds like the Persian or Maine Coon.

Because Fel d 1 — the major cat allergen — is produced in salivary and sebaceous glands, not in the hair itself. A curly coat does not change the biology of Fel d 1 production. The Selkirk Rex's dense, plush coat does trap some dander, but it also holds allergen-laden saliva from the cat's constant grooming close to the skin. When the cat sheds, the shed hair and dander release Fel d 1 into the environment. Bastien et al. (J Feline Med Surg 2019) found that Fel d 1 levels vary more than 80-fold between individual cats, with breed explaining only a small fraction of that variation.

The Selkirk Rex Longhair scores 3.5 out of 10, placing it in the Low-allergen at best band. The five-factor breakdown: allergen production 2/10 (40% weight; near-constant for all cats), shedding 4/10 (20% weight; moderate shed from dense curly coat), dander 4/10 (15% weight; coat traps some dander), saliva spread 3/10 (15% weight; grooming spreads Fel d 1 onto the coat), and groomability 5/10 (10% weight; regular brushing needed but can aerosolize allergen). The Devon Rex reaches 4.5 by having a much shorter, sparser coat that sheds less and traps less saliva.

Yes, significantly. Neutering reduces Fel d 1 production in male cats by 3 to 5 times. Fel d 1 is under hormonal control in males, and intact males produce substantially more than neutered males or females. For a cat-allergic person, selecting a neutered male or a female cat is a more evidence-based strategy than selecting a breed based on coat type. The effect of neutering on Fel d 1 levels is far larger than any breed-level difference.

The Devon Rex is generally friendlier for allergies. Both are curly-coated breeds, but the Devon Rex has a much shorter, sparser coat that sheds less and traps less saliva. The Devon Rex scores 4.5 on the Hypoallergenic Score versus the Selkirk Rex Longhair's 3.5. The Selkirk Rex's dense, plush coat holds more dander and allergen-laden saliva close to the skin, and the moderate shed rate releases Fel d 1 steadily. The Devon Rex's sparse coat means less surface area for dander and saliva to accumulate.

Yes, marginally. The Persian has a long, dense double coat that sheds heavily and traps dander and saliva, earning a score of 3.0. The Selkirk Rex Longhair's dense curly coat sheds moderately and traps some dander, earning a 3.5. The difference reflects the Selkirk Rex's slightly lower shed rate and the fact that its curly coat traps some dander rather than releasing it freely. However, both are in the low-to-moderate range, and neither is appropriate for allergy sufferers without a comprehensive management plan.

Yes, substantially. For a cat with a dense curly coat, the most effective measures are: keep the cat out of the bedroom, run HEPA air purifiers in shared rooms, replace carpet with hard flooring that can be damp-mopped, brush the cat regularly (ideally by a non-allergic person outdoors), and wipe the cat's coat weekly with a damp cloth. The Purina Pro Plan LiveClear food, which uses egg-based antibodies to neutralize Fel d 1 in the cat's saliva, has been shown to reduce active Fel d 1 by approximately 47 percent (Satyaraj et al., Immun Inflamm Dis 2019). Wash hands after contact.

The Siberian is marketed as a lower-Fel d 1 breed, but the claim is disputed. Yu et al. (2024) found that cats labeled as low Fel d 1 still produced clinically meaningful amounts. The Selkirk Rex makes no such marketing claim. Both breeds have dense coats — the Siberian a long double coat, the Selkirk Rex a plush curly coat. The Selkirk Rex's curly texture traps some dander, while the Siberian's double coat sheds more heavily. The Siberian scores 4.0 on the Hypoallergenic Score versus the Selkirk Rex's 3.5, but individual variation between cats of either breed far exceeds the breed-level difference.