It was during the making of The Man Who Knew Too Much, when she saw how camels, goats, and other “animal extras” in a marketplace scene were being treated, that Day began actively preventing animal abuse. She was so appalled at the conditions the animals used in filming were kept in that she refused to work unless they were properly fed and cared for. The production company had to set up “feeding stations” for the various goats, sheep, camels, etc., and feed them every day before Day would agree to go back to work.
In 1971, she co-founded Actors and Others for Animals, and appeared in a series of newspaper advertisements denouncing the wearing of fur, alongside Mary Tyler Moore, Angie Dickinson, and Jayne Meadows.[116]
In 1978, Day founded the Doris Day Pet Foundation, now the Doris Day Animal Foundation (DDAF).[117] A non-profit 501(c)(3) grant-giving public charity, DDAF funds other non-profit causes throughout the US that share DDAF’s mission of helping animals and the people who love them. The DDAF continues to operate independently.[118]
To complement the Doris Day Animal Foundation, Day formed the Doris Day Animal League (DDAL) in 1987, a national non-profit citizens’ lobbying organization whose mission is to reduce pain and suffering, and protect animals through legislative initiatives.[119] Day actively lobbied the United States Congress in support of legislation designed to safeguard animal welfare on a number of occasions, and in 1995 she originated the annual Spay Day USA.[120] The DDAL merged into The Humane Society of the United States (HSUS) in 2006.[121]The HSUS now manages World Spay Day, the annual one-day spay/neuter event that Day originated.[122]
A facility bearing her name, the Doris Day Horse Rescue and Adoption Center, which helps abused and neglected horses, opened in 2011 in Murchison, Texas, on the grounds of an animal sanctuary started by her late friend, author Cleveland Amory.[123] Day contributed $250,000 toward the founding of the center.[124]
A posthumous auction of 1,100 of Day’s possessions in April 2020 generated $3 million for the Doris Day Animal Foundation.[125]