There are more cats than people think because they are very secretive. They are making a comeback in Texas. In mountain country like the Appalachians & Rockies they are repopulating quite fast.
What part of the world did you see this cat?
I walked up on about a 150 lb black bear in Beaver's Bend State Park in SE Oklahoma. It took off and ran across the river and made a hard left behind a cedar tree. I was some shook up and cast all morning looking over my shoulder upstream and didn't catch many trout. The river was about 3' deep there and that made quite an impression on me. My fishing buddy basically called me a liar. He recounted that when another buddy saw a bear run across the road near there.
Cats are cool, but I wouldn't want to fight one over my deer.