Establishing that, for the purpose of determining criminal or civil liability, a dog may not be presumed dangerous or potentially dangerous solely on the basis of the breed or heritage of the dog; providing that the Act does not preclude a political subdivision from adopting or enforcing a program to control dangerous or potentially dangerous dogs if the program does not discriminate among dogs solely on the basis of the breed or heritage of the dog; applying the Act prospectively; and making the Act an emergency measure.