https://www.nhm.ac.uk/discover/news/2025/september/hybrid-mammoths-roamed-north-america-following-interspecies-breeding.html
Hybrid mammoths roamed North America following interspecies breeding | Natural History Museum
Columbian and woolly mammoths were breeding together for thousands of years.
natural history museumnorth americainterspecies breedinghybridmammoths