Fables of the Green Forest (山ねずみロッキーチャック, Yama Nezumi Rokkī Chakku, lit. "Rocky Chuck, the Mountain Rat", also known as Rocky Chuck the Woodchuck, Chuck the Beaver and Johnny Chuck) is an anime television series based on a series of books published in the 1910s and 1920s by Thornton W. Burgess which ran on the Japanese network Fuji Television from 7 January 1973 to 30 December 1973. It consists of 52 episodes and was produced by the animation studio Zuiyo Eizo along with Mushi Production as part of the Calpis Comic Theater (later known as World Masterpiece Theater).

The series has been aired in many countries outside Japan, such as Italy (on TMC), Germany (Bayerischer Rundfunk), Spain (TVE, Canal Nou), Romania (TVR 1), Portugal (RTP), Venezuela (VTV), the United Kingdom (ITV / Channel 4), Canada (TVOntario, Knowledge Network and CBLFT-DT, dubbed in both English and French), Saudi Arabia (Saudi 2), Australia (Network Ten), Ireland (Raidió Teilifís Éireann), Israel (Channel 2 dubbed in Hebrew), the Emirates (Dubai 33), Nigeria (NTA), Cyprus (METV), New Zealand (TV One), Brazil (SBT), the Netherlands (TROS), Malaysia (Network Two), Singapore (Mediacorp Channel 5), Indonesia (RCTI / SCTV), South Africa (SABC2), Namibia (SWABC, while known as South West Africa), Hong Kong (both ATV and TVB) and Trinidad and Tobago (TTT).

The release of the series into Canada was done through ZIV International in 1978. There was a second English dub under the title Friends of the Green Forest which aired on the TVOKids on TVOntario in the 1990s.

In the United Kingdom, the original transmission of the series as aforementioned on the ITV network was cut short, with only the first 30 episodes being broadcast in 1982, because the series was dropped due to the introduction of the Childrens ITV service in January 1983 taking over the series' former timeslot. Some of the other episodes were broadcast sporadically in the UK on the "Early Morning" weekend segment on Channel 4 in the early 1990s.