Which long-running and highly popular Chinese animated television series centers on a clever group of goats living in the Green Green Grassland who constantly outsmart a bumbling wolf couple, Big Big Wolf and Red Wolf, attempting to catch them for dinner?

The beloved Chinese animated television series you're thinking of is "Pleasant Goat and Big Big Wolf (Review)." This highly popular show, which first premiered in 2005, centers on a clever group of goats residing in the Green Green Grassland and the constant, often comical, attempts of a bumbling wolf couple, Big Big Wolf (also known as Wolffy) and Red Wolf (Wolnie), to catch them for dinner. The series is known for its lighthearted humor and the goats' ingenious ways of outsmarting the wolves, particularly the quick-witted Weslie (Pleasant Goat) who often devises plans to foil Wolffy's schemes.

"Pleasant Goat and Big Big Wolf" has achieved immense popularity in China, becoming one of the most successful domestically produced animated series. It has aired on numerous television stations across China and has been broadcast in many other countries and regions, including Hong Kong, Taiwan, and parts of Southeast Asia. The franchise has expanded beyond the television series to include a successful line of animated feature films, with the first movie, "The Super Adventure," breaking box office records for Chinese animated films at the time of its release in 2009.

Over its long run, the series has produced thousands of episodes, making it one of the longest-running animated series globally. While primarily a comedy focused on the endless conflict between the goats and wolves, the show has also explored themes of friendship, cooperation, and perseverance. Despite its widespread appeal, the series has also faced some scrutiny regarding its cartoon violence, leading to discussions about content regulation for children's programming. However, its enduring popularity underscores its cultural significance and its place as a cherished part of Chinese animation.