just by telling the officers about the cat he saw...or thought he saw. In such situations as these, being obstinate for its own sake is neither noble nor praiseworthy but there's no real evidence shown here to know who was out of line or who was not.
Read https://www.washingtonpost.com/amphtml/news/volokh-conspiracy/wp/2017/04/19/can-the-police-retaliate-against-a-citizen-for-refusing-to-answer-police-questions/?hl=1&noRedirect=1 and down the page is the section "III. The three versions of the Fifth Amendment".
So if you don't plead the Fifth at first, it is waived.
" If the right is not asserted before the statement is made, the right normally is waived. "
What do you think? Seems you have a lot to say and not say on all encounters today.
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