Boulder authorities hope a baseball hat will lead them to the identity of a body found floating in a small pond Tuesday afternoon.
The Boulder County coroner has ruled the death of a 19-year-old Colorado man whose body was found in a pond was an accidental drowning.
Officials believe the commercial cooking oil was dumped upstream from the pond starting about Jan. 18.
The remaining animals were taken to veterinarians for care.
Following the death of a teenager who fell through ice on Thursday, rescue crews are stressing safety.