Chimps help with pets Corner ' s new floor . Receiving the ' assistance ' Jackie and Peter , the chimpanzees , workmen laying a new wooden floor Pets corner at the London Zoo . The corner is due to reopen on May 1 , when young visitors will again be allowed to play with the animals . As shows , Jackie ( left ) remonstrates with Peter , who seems to find difficulty hitting the nail on the head . 12 April 1937