You searched for: “misoxenists
misoxenist (s) (noun), misoxenists (pl)
Something or someone that feels hostility or animosity towards strangers: A misoxenist simply will not tolerate anyone who is neither a friend nor an acquaintance.

Even pets; such as, dogs or cats, will attack strangers because such people are despised and not welcome.

A cat sees the postal lady, who is a stranger, approaching the door.
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When the lady is about to leave some mail, the cat would attack her.
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The scenes above represent an actual attack by a cat upon a postwoman in Germany in early 2002; because, whenever she tried to deliver a man's mail the cat would jump out and bite and claw her.

The owner of the misoxenist had to pick up his mail at a neighborhood bar because he refused to restrict the freedom of his cat to come and go whenever it wanted to do so.