A pus hog was an animal from the Delta Quadrant, similar to an Earth pig.

In a delusion experienced by The Doctor in 2371, in which the crew installed additional holoemitters aboard USS Voyager, Neelix called an invading Kazon a pus hog as he fended him off with vegetables and kitchen utensils. (VOY: "Projections")

Neelix, initially jealous when Tom Paris gave Kes a locket for her second birthday, later assured her that she had "seen the last of that green-eyed pus hog". (VOY: "Twisted")

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