Sagara (サガラ|Sagara) is the pig that helped find the black gold (oil) for the Kingdom of Science.
Sagara's appearance is based on the baby Inoshishi, the Japanese Wild Hog.
Sagara was most likely captured by Kohaku to herd the pigs and making a pig farm so Francois can cook them. Later, when he was about to get cooked, Senku stops him and he's starting to work with Suika since then to find Sagara oil field. Under his guidance, Senku and the gang manage to secure the oil fields.
Francois is nudged by Senku to lie that Sagara is not fit for eating due to being exposed to the oil; he becomes Suika's second pet as a reward for her hard work.
- Sagara is named after Sagara Oil Field, located in Makinohara, Shizuoka Prefecture, Japan.