Strawberry-chan na Choukarei na Seikatsu (2004)

Blurb:
Once upon a time there was a talking frog. This frog’s name was Strawberry-Chan. Strawberry-chan loved? his boy, Akiyoshi very much, but Akiyoshi liked nothing more than to use a straw to blow Strawberry-chan up like a balloon, much to the chagrin of Strawberry-chan. Akiyoshi’s friends all feel very differently about Strawberry-chan. Some wish he were treated better, some really love Strawberry-chan and one even wishes he was Strawberry-chan. With all of this love and abuse, will our frog possibly survive the first volume?

Source: www.anisearch.com/manga/2927