The army cutworm moth is a critical source of fat for as many as a third of Yellowstone National Park's grizzly bears; they overturn rocks to find them, as many as 40,000 per bear in a single day.

• Abears; they overturn rocks to find them, as many as  
• Bbears; overturning rocks to find the insects, up to  
• Cbears, overturning rocks to find them, as many as  
• Dbears, and they overturn rocks to find them, up to  
• Ebears, which overturn rocks to find the insects, as many as