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We can often see dog +f)_-z9p.B8`,c taking their dogs for a walk. But have you 'g)c1Q;o/H5j2Q4R+W9f of taking penguins go out for a walk in line every day. It is said that this can make them happy and stop them 'q6q5v:}4V6x9Z,L2b+s9D7B1j being homesick. The penguins in this zoo didn’t eat well and were not kind to workers when they first came to the zoo, maybe they were not (A(j1j4E;j4X+S*n6S*B+W1E to the life in the zoo. So the zookeepers came up with this good 6b3^8S1b6j5[.@ . They let them walk just as they did in South Pole（南极）. Now, all these penguins have become happy.;X'Y:I5[8d6\