Ever since Li Xing’s son saw Disney’s “Zootopia” two weeks ago, the 7-year-old from Tianjin, China, has been obsessed with getting his own Nick Wilde, the red fox con artist at the heart of the movie. “The kids wouldn’t shut up about it. All they talk about is that film and the fox,” said Li. “I told him many times our two-bedroom apartment is too small for a pet, but he wouldn’t listen.” So Li we