Punch, a plush-clutching Japanese baby monkey that has become a global online sensation, will celebrate his first birthday on Sunday as his zoo is flooded with fan letters from around the world. He is growing well, in good health and is now playing with others, zoo official Takashi Yasunaga told AFP on Friday. The facility has also been inundated with calls and emails -- some praising its efforts but many others criticising how Punch is kept. Punch now spends his day resting under the shade, becoming more active in the cooler, early evening hours. Another fan, 66-year-old Yukie Mibayashi, said, "People all around the world are supporting Punch, so I want to tell him, 'Everyone's watching you.