People watch a dog climbing during the 22nd Pet Fair Asia in Shanghai, east China, Aug. 24, 2019. The 22nd Pet Fair Asia, which will last for five days, greeted its first public day on Saturday. (Photos: Xinhua)

People watch a lizard during the 22nd Pet Fair Asia in Shanghai, east China, Aug. 24, 2019. The 22nd Pet Fair Asia, which will last for five days, greeted its first public day on Saturday.

People watch cats during the 22nd Pet Fair Asia in Shanghai, east China, Aug. 24, 2019. The 22nd Pet Fair Asia, which will last for five days, greeted its first public day on Saturday.

A dog takes part in a match during the 22nd Pet Fair Asia in Shanghai, east China, Aug. 24, 2019. The 22nd Pet Fair Asia, which will last for five days, greeted its first public day on Saturday.

A dog takes part in a match during the 22nd Pet Fair Asia in Shanghai, east China, Aug. 24, 2019. The 22nd Pet Fair Asia, which will last for five days, greeted its first public day on Saturday.

People watch lizards during the 22nd Pet Fair Asia in Shanghai, east China, Aug. 24, 2019. The 22nd Pet Fair Asia, which will last for five days, greeted its first public day on Saturday.

Dogs wait to take part in a match during the 22nd Pet Fair Asia in Shanghai, east China, Aug. 24, 2019. The 22nd Pet Fair Asia, which will last for five days, greeted its first public day on Saturday.

People watch dogs during the 22nd Pet Fair Asia in Shanghai, east China, Aug. 24, 2019. The 22nd Pet Fair Asia, which will last for five days, greeted its first public day on Saturday.