For fans of Dr. Seuss who remember the author’s love of animals, it will come as no surprise that pets take center stage in the latest work by Theodor Seuss Geisel.

What Pet Should I Get?, the newly released book by the beloved children’s writer, captures the excitement—and indecision—of a brother-sister duo as they choose the family pet. The book’s afterword details Geisel’s fondness for the animals he cared for during his life and notes the importance of pet adoption and animal care.

In honor of the book, the ASPCA is joining forces with Random House Children’s Books and Dr. Seuss Enterprises for a special social media campaign to call attention to pet adoption from a shelter or rescue organization, and celebrate the unique bond between people and their pets. We hope the campaign will serve as further encouragement to raise pets safely and lovingly in a forever home.

We’re asking pet parents to show the love they have for their pets by sharing a photo of, or with, their furry friend on Instagram or Twitter, and tagging it with the hashtag #whatpet. For every photo shared on Instagram or Twitter using the #whatpet tag, Random House Children’s Books and Dr. Seuss Enterprises will donate one dollar to the ASPCA to help raise money for animals in need across the country, up to the first 15,000 photos.

We’re grateful to Random House Children’s Books and Dr. Seuss Enterprises for this wonderful opportunity to remind readers that no matter what type of pet you get, pet adoption is always the best option.

Join in on the fun! After you share your pet’s photo, be sure to check out other pet parent’s with their four-legged companions at www.WhatPet.com.