What rock can form from decaying animals
Sedimentary or Metamorphic

Sedimentary

Explanation:

Sedimentary rocks are formed when tiny pieces of certain organic material settle in one location and then compact together. In this case in a decaying animal pieces of dirty, rocks, or soil settle in the decaying animal then refusing to accumulate with each other so they settle together then forming a sedimentary rock.

Hope this helps.

answer; ///i believe its: ///(embolus);