Last week, it was reported that 14 horses at a farm in Wisconsin had died, and 1oo more were ill, after consuming hay contaminated by blister beetles.
The owners of Red Ridge Riding Stable, Cindy Kanarowski-Peterson and Lyle Peterson, said they purchased the hay from farms in South Dakota and Wyoming, after flooding destroyed their own hay fields.
Post-mortems on some of the horses pointed to blister beetle poisoning. No other similar deaths or illnesses have been reported.