According to Google's website, doodles are “the fun, surprising and sometimes spontaneous changes that are made to the Google logo to celebrate holidays, anniversaries and the lives of famous artists, pioneers and scientists.” The search-engine giant says it has created more than 1,000 doodles over the years.
Google says it “receives hundreds of requests every day, so we, unfortunately, can't respond to everyone. But rest assured that we're reading them.”
World Spay Day is “presented” by the Humane Society of the United States and Humane Society International. According to the event’s website, “World Spay Day shines a spotlight on spay/neuter as a proven means of saving the lives of companion animals, feral cats and street dogs who might otherwise be put down in a shelter or killed on the street.”