has anyone knowledge of an allergic reaction 3+ weeks after receiving the implant. We have had a couple of ferrets that broke out in a rash and no explanation as to why - 3 weeks seems like too long of over night showing a rash all over their body. Millie Sanders at Txferretrescue.org with Texas Ferret Lovers Rescue and connecting Foster homes and sanctuaries [Posted in FML 8163]