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Interesting. There is similar modern folklore revolving around out-of-place big cats in Britain (see e.g. this thread: https://forums.forteana.org/index.php?threads/alien-big-cats-abcs.69/).
The animal in the second video definitely looks like a domestic cat to me (at least in proportions and motorics, I can't get a good reference for the size from anything in its surroundings).