Here's What Killed Those Dead Cows
Toxic sweet potatoes were included in their feed
By Evann Gastaldo,  Newser Staff
Posted Jan 31, 2011 1:38 PM CST
The cows were done in by sweet potatoes.   (?karlfrankowski)

(Newser) – The latest mass animal death mystery has been solved: The 200 cows that dropped dead in a Wisconsin pasture two weeks ago were killed by, of all things, moldy sweet potatoes. The farmer who owned them originally suspected disease, but investigators ruled that out and determined the cows were likely poisoned by the spoiled sweet potatoes, which were included in their feed, Aol News reports. Click here for more.