All animal bites that break the skin should be reported to Animal Services in a timely manner. If the bite was from a dog, cat or ferret, a mandatory 10 day quarantine also needs to be completed. If a pressure mark or bruise occurred, no bite report needs to be completed as the main concern is for the transmission of rabies which can only occur if the skin is broken. Only mammals have the possibility of transmitting rabies. In Colorado, there has not been a human case of rabies since 1931. The last reported dog case acquired in Colorado was in 1974 and there was one cat each in 2008 and 2010.