Look closely at animal dung (e.g. horse), to see what is in it, and how it compares to what the animals eat. Discuss what animals might eat dung.
Science content (2016 curriculum):
Biology: Food Webs, Ecosystems, Biomes (3, 4)
Science topic (2005 curriculum connection):
Life Science: Needs of Living Things (grade 1)
Life Science: Animal Growth and Changes (grade 2)
Life Science: Habitats and Communities (grade 4)
Life Science: Ecosystems (grade 7)