Subscribe | UPI Odd Newsletter Subscribe CHICAGO, Sept. 23 (UPI) -- A YouTube video shot at the Chicago River purports to show an object some have said resembles a swimming hippopotamus. The video, posted by YouTube user "Chris O.," shows the mysterious object in the waters of the Chicago River while the voices of two men discuss what they are seeing. Advertisement The title of the video asks: "A hippo in the Chicago River?" However, Officer Jose Estrada of the Chicago Police Department told The Blaze, "There have been no reports of wild animals roaming the streets or the rivers of Chicago." A representative of Chicago's Brookfield Zoo said it was unlikely a hippo would be able to survive in the river, especially given the "harsh winters" the city is known to experience.