A Shih Tzu (UK: /ˌʃiːˈtsuː/, US: /ˈʃiːˌtsuː/; Chinese: 西施犬; pinyin: Xī Shī quǎn literally 'Xi Shi dog', also spelled Shittsu) is a toy dog breed, weighing from 4 to 7.25 kilograms (9–16 lb) when fully grown. The breed was developed in China. The coat may be of any color, though white and with blazes of grey are frequently seen. A very noticeable feature is the underbite, which is required in the breed standard. They tend to be possessive around other dogs. Training and proper socializing must start at a young age for the Shih Tzu to obey basic commands, for the Shih Tzu is prone to stubbornness when it comes to training. In comparison with many other breeds, Shih Tzu do not shed to the same degree, only losing small amounts when bathed or brushed.