LONDON -- Monkey business proved to be lucrative Monday when paintings by Congo the chimpanzee sold at auction for more than $25,000. The three abstract, tempera paintings were auctioned at Bonhams in London alongside works by impressionist master Renoir and pop art provocateur Andy Warhol. But while Warhol's and Renoir's work didn't sell, bidders lavished attention on Congo's paintings. An American bidder named Howard Hong, who described himself as an ''enthusiast of modern and contemporary painting," bought the lot of paintings for $26,352, including a buyer's premium. The sale price far surpassed predictions. "We had no idea what these things...