This can go either way. My Lab did seem to intimidate our neighborhood fisher cat; but I have heard of cases in which fisher cats injured or killed many types of dogs, including Labs. Fishers are members of the weasel family. read more
In a town near mine, the police shot a fisher cat that was attacking a horse. One of my neighbors was attacked by a fisher cat when she was out on a walk. It tried to crawl up her leg; she beat it off with her cane. read more