Gang rape is also present in the animal world.
Ducks, Sparrows, and Dolphins engage in the practice.
Does that give people license to do it in the human race?
Ooh, sparrows.
Home invasion and slaughter of the homeowner is natural. House sparrows vs bluebirds.
Brownheaded cowbirds. Nest parasite. Mafia mother. So making some poor slave woman take care of your babies at the cost of starving her own is natural, and good.