The krayt head seemed to be preserved somehow.

The Krayt head was one of three important relics kept by the Tusken Raiders in their relic cave. The head was from a krayt dragon, and seemed to somehow be preserved. It was extravagantly displayed as a shrine within the cave.

The head and two other relics were stolen by a spacer sometime after the Battle of Yavin in 0 BBY. They were delivered to scholar Srimaur in the city of Mos Espa for study, but the theft enraged the Tuskens. In retribution, the Tusken King led an army of Sand People to invade Mos Espa.