Hi: Of course, I live on the other side of the "Pond" from you. However, I have seen one live panther, cougar or puma as you prefer while hunting one day.
I was in a swamp on the north side of the Yellow River in North Florida. It was quite late. I could barely see anything in the remaining daylight. I heard footsteps behind me. Soon, a doe walked near. As she approached the tree I was in, a form sprang from the tree behind me and attacked the doe. It was as long or longer than she, not including it's tail. It went for her neck. She sprang upwards and the cat raked it along the spine with it's claws but missed the neck with it's jaws. The doe did the "white-tail thing" and bounded up as if on springs and escaped. The cat was enraged. It chased her perhaps 100 meters and gave up. However, as darkness descended, the cat remained near with me in a tree. It growled and moaned and made all sorts of aggravated sounds while I pondered my options, which were few. My truck was 4 klicks away. Eventually, I made my way down the tree singing "Dixie", with a 4 inch blade in one hand and a flashlight in the other and walked back to the truck. All the while, I looked behind me but the cat had disappeared......That was my one and only encounter. I am sure it was a panther due to it's large size and the sounds it made. I've seen plenty of wildcats (bobcats) and know this one was not one of those.
Tight Lines, Bruce