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Scientists suspect the creatures’ diets changed because of the arrival of a new competitor, the Australian water rat, or rakali, reports the Sydney Morning Herald’s Angus Dalton.—
Sarah Kuta,
Smithsonian Magazine,
13 June 2024 The researchers think competition for food caused the disappearance of teeth in the platypus—the spread of the Australo-New Guinean water rat may have affected which prey platypuses hunted for.—
Elizabeth Rayne,
Ars Technica,
7 June 2024