After Braddock's defeat in the French and Indian War, young Washington survived, but the camp-follower women did not. One pregant young lady was dismembered, she and her infant thrown in a pot, and they were eaten. Historian Alan Eckert points out that they ate her a bit underdone because they were in a hurry.
The Indian in "Last of the Mohicans" who eats the heart of the English commander is not a bad portrayal of a lot that went on. (The whites had their moments, too, such as the murder of Chief Logan's family, and the massacre of the Moravian {Christian} Indians.)
The point is that they weren't pure and peaceful savages.
I understand that these traditions were totally rejected by one noble warrior who came on the scene and was disgusted by this behavior....a guy named Tecumseh.
Who in the end is more respected by the non Indians than he was by the Indians.