Many people have allergies to cats, and much of the protein in cat dander comes from saliva that is transferred to the coat during the animal's self-grooming activities. Many types of pet animals have been incriminated in their owners allergy problems, but dogs, cats, and rabbits are the most common offenders. I am frequently asked by clients with allergies if there is a particular breed of dog or cat that would be less likely to cause them problems. The answer really is unclear. There are certain types of dogs that do shed less hair, and theoretically may have less skin dander.
Poodles are the classic example.
Similarly, the Rex breeds of cats have a tightly curled coat that may be somewhat less likely to induce allergies in people. However, these generalizations do not always hold true. If you have a pet allergy that causes severe signs, or are afflicted with asthma, you should definitely consult your physician for treatment recommendations. Frequently, a physician will advise the removal of the pet from the household, particularly if the allergy patient is a child. This situation can be very stressful when a beloved family pet is involved.