A never-before-seen Dr. Seuss story titled What Pet Should I Get? is being published on July 28th, more than 20 year's after the author's death. The manuscript and illustrations for the book were found in a box in Theodor Geisel / Dr. Seuss' home in 2013 by his widow Audrey Geisel.

"it is hard to make up your mind, but sometimes you just have to do it!"

The book features the same brother and sister that appear in One Fish Two Fish Red Fish Blue Fish, and although plot details are thin on the ground, publishers Random House Children's Books say that the new title will feature (spoiler alert!) a decision-marking process involving pets. "The tale captures a classic childhood moment — choosing a pet — and uses it to illuminate a life lesson: that it is hard to make up your mind, but sometimes you just have to do it!"

The cover for the new Dr. Seuss book. (Random House Children's Books).

And there's more good news for Dr. Seuss fans — enough material for two more books was reportedly found in the same box, and Random House say they are working on getting them ready for publication too. Meanwhile, What Pet Should I Get? is already available for pre-order for $17.99.

"While undeniably special, it is not surprising to me that we found this," said Audrey Geisel in a statement. "Ted always worked on multiple projects and started new things all the time — he was constantly writing and drawing and coming up with ideas for new stories. It is especially heartwarming for me as this year also marks twenty-five years since the publication of the last book of Ted's career, Oh, the Places You'll Go!"