Do hyenas eat dead hyenas?

They might but not their family. If a hyena gets attacked and gets killed and the family members see it get killed they don't eat it. The same with the different kinds of hyenas like a striped hyena wont eat a striped hyena or a brown hyena won't eat a brown hyena and so on.

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Actually Hyenas do eat other hyenas. When it comes to Hyenas the females are the head honchos and from birth one of the female cubs gets picked to be the next pack leader (Matryark). the cubs fight alot and if the princess cub wants it may kill and eat her sister or brother and the mother wont stop her.