The argument is invalid, even though B is true. Counterexamples to argument forms. Give a counterexample to the argument form below. Some dogs are things that growl. Not every thing that growls is a human being.
Some dogs are human beings.
Well-known falsehood 3. Write the form and draw a Venn Diagram for the following argument. Say whether it is valid or invalid. If anything is a horse, it is an animal. Some horses don t run fast.