Doraemon - Season 2 - Eps 126: Mini Pet - A Lion
It starts with Nobita and Gian playing and Suneo brings the Dog King and says if anyone disobeys him, he will punish the one who disobeys. This makes Nobita angry, and he and Doraemon catch a lion. The lion later develops a friendship with Nobita but they send the lion back to its place. Before it, he meets the Dog King in the night. It ends with the next evening after sending the lion back, Suneo tells Nobita to kneel down at the Dog King, which he refuses. Suneo tells the Dog King to punish Nobita, but he runs away instead. (This episode has since been remade.)
About Doraemon

Title: Doraemon
First Air Date: 1979-04-02
Last Air Date: 2005-06-24
Status: Ended
Rating: 7.7/10 (from 584 votes)
Language: JA
Seasons: 28
Total Episodes: 1835
Network: tv asahi
Genres: Action & Adventure, Animation, Comedy, Sci-Fi & Fantasy, Kids, Family
Production Companies: Shin-Ei Animation
Synopsis
Doraemon is an anime TV series created by Fujiko F. Fujio and based on the manga series of the same name. This anime is the much more successful successor of the 1973 anime.
Cast

Nobuyo Oyama
Doraemon (voice)

Noriko Ohara
Nobita Nobi (voice)

Kaneta Kimotsuki
Suneo Honekawa (voice)

Michiko Nomura
Shizuka Minamoto (voice)

Keiko Yokozawa
Dorami (voice)

Kazuya Tatekabe
Takeshi Gouda (voice)