The book was banned in the province of Hunan, China beginning in 1931. The censor, General Ho Chien found it an insult to humans to have animals acting in the same complex manner as a human. His fear was that kids would think humans and animals were equal and on the same level.
He thought that it would be disastrous. The ban has since been removed. Other books have been banned from countries before, too. The 1945 book, Animal Farm, was banned from being published for 2 years during WWII. It was also banned in Kenya in 1991 for criticizing corrupt leaders. It was then banned in the United Arab Emirates in 2002.