DID YOU KNOW...that ROTTWElLERS, are developing a reputation for NOT developing parvo antibodies even after a rigid vaccination schedule....and that the only way for you to be sure YOUR Rottweiler is protected is to have your Veterinarian run a PARVO TITER TEST? Here is a case where an ounce of prevention ($30.00+) is cheaper than a pound of cure ($500.00+).