Police may bring criminal charges over a Cincinnati Zoo incident in which a gorilla was killed to rescue a 4-year-old boy who had fallen into its enclosure, a prosecutor said on Tuesday. The death of Harambe, a 450-pound (200-kg) gorilla, also prompted the animal rights group Stop Animal Exploitation Now to file a negligence complaint on Tuesday against the zoo with the U.S. Department of Agriculture. The group is seeking the maximum penalty of $10,000. The group said in its complaint letter that the child's ability to get past the barrier was proof the zoo was negligent and should be...