Context: At one time I had two cats who would hiss and spit and tear about when the other came near . It was quite an impressive show of conflict . When I moved into a small house the situation became even more unpleasant . I was awoken in the night by furious , exploding encounters .

Question: Why would the cats act this way ?
Options:
0. They were fighting over the owner of them .
1. Because that 's how cats show they are having fun .
2. That 's just cats being cats .
3. They were territorial around each other .
Answer: 3