Covered with blood, with heads, bones and legs broken, they biting the earth i.e. (eating dust) became food for animals gf prey.
दन्तैर्दशन्तो वसुधां शेरते क्षतजोक्षिताः। भग्नमूर्धास्थिचरणा: क्रव्यादगणभोजनाः॥