Believe it or not itisnt the hamster your allergic to, its the feces andurine , Cassi has the sameproblem , the fur didntbother her she was testedthe Doctor said where fur isntthe problem its got to be thebody functions ., Cassi getsHuge Hives, reddeningswelling etc from them also . Ihave to keep her and rodentsseperate , She cant go near any ofthe rodent family including theGuinia Pigs .