My Many Colored Days is a children's book written by Theodor Geisel under the pen name Dr. Seuss. It features animals representing different emotions on different days. These include a horse, flamingos, a seal, a wolf, an anteater, a bee, a fish, and a bird.

Accompanying a manuscript Geisel wrote in 1974 was a letter outlining his hopes of finding "a great color artist who will not be dominated by me". Geisel saw his original text about feelings and moods as part of the "first book ever to be based on beautiful illustrations and sensational color".

References

My Many Colored Days Book Review Teaching for Change (2021) by Paige Pagan: https://socialjusticebooks.org/my-many-colored-days/