Instruct: Classify the given review into positive or negative sentiment.
Query: Warning - overdose of this product killed my neighbor's dog

Like some other reviewers, my neighbor raved about how great these supplements tasted to her dogs who gobbled them up like treats. Unfortunately, one of the dogs got into the sealed container on a countertop and ingested about 75-100 of these; in spite of excellent vet care, the dog died due to liver failure from the extreme overdose.If you buy this product, keep it in a very secure place where there is no possible way your dog can access them.