Chobi is a mascot for pixiv. She is so popular that someone made a pepakura version of her. She is an easy craft for kids to build.
Chobi is an office dog of pixiv and she will appear whenever pixiv site goes under maintenance. A mini game of Chobi will be display on the maintenance page.
When the site is down Chobi will start collecting bones, climbing blocked walls , collecting chikuwa and expanding herself.
I have no idea what expanding herself means, perhaps she gets bigger the longer pixiv went down ? Chobi has her own twitter account where she announces things, in Japanese.. You may check her twitter here
Chobi is designed by tenpepakura