Anaplasmosis is not a disease in dogs, nor is it spread by saliva or by feed in either cattle or dogs. It is a blood-borne infectious disease in cattle caused by rickettsial bacteria of the Genus Anaplasma. It occurs more commonly in the subtropical and tropical areas and, though not contagious, can transmitted by ticks that feed on the blood of cattle. It can also be spread by contaminated needles, dehorning equipment, castrating knives, tatooing equipment and biting flies and mosquitoes.