A Good Day to Be a Dog

A Good Day to Be a Dog is a South Korean television series based on the Naver webtoon of the same name by Lee Hey, which was published between 2017 and 2019, directed by Kim Dae-woong, and starring Park Gyu-young, Cha Eun-woo, and Lee Hyun-woo. It aired on MBC TV from October 11, 2023 to January 10, 2024, every Wednesday at 21:00 (KST). It is also available for streaming on Viki and Viu in selected regions.

Synopsis
The series is about the romance between a woman and a man, the woman who is cursed to transform into a dog when she kisses someone, and a man who is the only person who can break the curse but is afraid of dogs due to a childhood trauma.

Main

 * Park Gyu-young as Han Hae-na / Mak-soon: a high school Korean language teacher who turns into a dog when she kisses someone.
 * Cha Eun-woo as Jin Seo-won / Soo-hyun: a high school math teacher who became afraid of dogs due to childhood trauma.
 * Lee Hyun-woo as Lee Bo-gyeom / San-sin: a high school Korean history teacher who is known for being handsome at the high school.
 * Yoon Hyun-soo as Choi Yul: Seo-won's nephew and Hae-na's student.
 * Kim Yi-kyung as Min Ji-ah: a high school student.

Hae-na's family

 * Ryu Abel as Han Yu-na: Hae-na's older sister.
 * Jung Young-joo as Shin Mi-seon: Hae-na's mother.
 * Kim Hong-pyo as Han Pan-dong: Hae-na's father.
 * Cho Jin-se as Song Woo-taek: Yu-na's childhood friend.
 * Kim Hae-jun as Hae-na's maternal uncle.

Garam High School teachers

 * Lee Seo-el as Yoon Chae-ah: a Korean language teacher.
 * Song Young-ah as Cheon Song-yi: a music teacher.
 * Yoo Seung-mok as the vice principal

Hae-na's students

 * Jo Ah-young as Song Da-eun: a high school student who falls in love with Seo-won.
 * Kang Soo-bin as Kwon Ri-ae: Bo-gyeom's big fan who is a student good at math and physics.
 * Kim Min-ji as Chu So-yeon
 * Shin Jun-hang as Jo Jun-seo

Other

 * Kim Min-seok as Kang Eun-hwan: Seo-won's high school classmate.
 * Lee Seung-jun as Oh Sang-su: Yu-na's ex-boyfriend.

Extended

 * Lee Jong-wook as Min-sik: a fellow teacher at Garam High School.
 * Shim Wan-jun as a physical education teacher at Garam High School.
 * Park Hae-in as Yoon-ji: a fellow teacher at Garam High School.

Special appearance

 * Lee Yong-nyeo as Popi's owner

Production
Filming began in October 2022, and finished in April 2023.