Answer the following question: Fact 1: Aggression is behavior that is intended to cause harm or pain. Fact 2: Dogs can be aggressive and stubborn and willful. Given the two facts above, what can dogs cause?

Select from the following.
(1). Harm or pain;
(2). high temperature;
(3). hate;
(4). friction;
(5). Dehydration;
(6). insanity;
(7). cats;
(8). sweating;
Answer:
(1).