In the book An Unquiet Mind author Kay Redfield Jamison wrote that some sheep breeders would use lithium to deter the coyote from killing the sheep. I don't know if they put the lithium in the sheeps' feed or if they sacrificed a sheep and then put lithium in the sheep's meat but apparently the coyote find the taste of lithium very unpleasant and they learned to associate the taste with sheep and it helped reduce sheep loss by coyote. It seems a bit odd but that's what she wrote.