Happy Lamb and Grey Wolf or Pleasant Goat and Big Big Wolf (the English name shown on the official merchandise) is a Chinese animated television series which was created by Huang Weiming, Lin Yuting and Luo Yinggeng, and produced by Creative Power Entertaining. The show is about a group of goats living on the Green Pasture, Qing Qing Grasslands/Plains, and the story revolving around a clumsy wolf who wants to eat them. It is aired on over 40 local TV stations including Hong Kong's TVB, BTV Animation Channel and CCTV. The show was also aired in Taiwan, India and Singapore. The show has not yet seen an international release outside of Asia. However, some of the Pleasant Goat and Big Big Wolf DVD's have English subtitles. As of 2011, an English dub has been aired in Taiwan.

Happy Lamb and Grey Wolf or "Pleasant Goat and Big Big Wolf" had 530 episodes when it premiered. After it became moderately successful, Creative Power Entertaining created the next 480 episodes, including 60 exclusive Olympics episodes.

In January 2009, the first Happy Lamb and Grey Wolf movie - The Super Snail Adventure was launched in China. It has broken the domestic box office record for a Chinese animated film, collecting 30 million Yuan (US $4.39 million) during its opening weekend. On the first day of release alone, the movie made 8 million Yuan. According to Beijing News, the weekend's revenue was well ahead of the previous record holder for domestic animation, Storm Rider Clash of the Evils --the adaptation of the Storm Riders comic brought in 25 million Yuan in two weeks when it was released the previous summer.

Describing the Pleasant Goat movie as a "dark horse," Zhao Jun, general manager of China Film South Cinema Circuit Co. Ltd., predicted the film would make at least 60 million Yuan in total box office revenue. A manager of the Beijing-based Stellar International Cineplex said the movie theatre's biggest hall, which had been scheduled to screen Red Cliff II, was reassigned to show Pleasant Goat and Big Big Wolf: The Super Snail Adventure in order to meet popular demand.

China's Xinhua news agency quoted unspecified "insiders" as crediting the cartoon's success to the large pool of fans who have tuned in to the Pleasant Goat and Big Big Wolf television cartoon series over the past three years. Based on the 500-episode television series, The Super Snail Adventure stars the same characters but in a very different scenario. The movie's storyline tells how several goats and their old nemesis, Big Big Wolf, join forces to defeat their common archenemy --bacteria.

A second movie, Pleasant Goat and Big Big Wolf --The Tiger Prowess was released in January 2010  Video page (has English subtitles) http://hd.tudou.com/program/24251/. This move contains many original songs. Yang Peiyi, who performed <Ode to the Motherland> at Beijing 2008 Summer Olympic Opening Ceremony, was invited to sing <Left hands and Right hands>.

The third movie, Pleasant Goat and Big Big Wolf - Moon Castle: The Space Adventure  was launched in 2011. The fourth movie Pleasant Goat and Big Big Wolf - Mission Incredible: Adventures On The Dragon's Trail followed in 2012. The theme and name of all four movies is the animal of the Chinese Zodiac of the year in which it was released. The second, third, and fourth movies were all released at Chinese New Year.