Mr Desisto of the Food Adulteration Agency says "There's nothing adulterous", as in an adulterous relationship, about the cat food, instead of the appropriate "nothing adulterated", as in unadulterated food products.
The cats never really attack people; they are obviously just pushed and pulled around by the actors.
After returning from Annie's, Angie flubs her line to Lance by saying "But how could a cat turn into man eating monsters?", pluralizing the object of a singular subject, instead of using the correct term "a man eating monster".