Source-backedFixed Annual
What if Cats & Dogs Had Opposable Thumbs Day
The first-party Wellcat Holidays calendar lists What if Cats & Dogs Had Opposable Thumbs Day on March 3 and identifies the collection as created by Thomas and Ruth Roy.
Topic facet
Animals Pets observances
Animal, pet and animal-welfare observances.
161 records
Authority records
Source-backedFixed Annual
Whooping Crane Day
Houston Zoo states that Whooping Crane Day takes place on May 28 each year, and the International Crane Foundation independently promoted Whooping Crane Day for May 28 in 2026.
Source-backedHistorical Legacy
Wildlife Conservation Day (U.S. State Department 2012 campaign)
Archived U.S. Department of State material says U.S. missions marked Wildlife Conservation Day on 4 December 2012.
Source-backedFixed Annual
World Animal Day
World Animal Day movement
Source-backedEdition Specific
World Animal Reiki Day
The Shelter Animal Reiki Association identifies 5 February as World Animal Reiki Day and documents the 2026 edition and the observance’s organizer history.
Source-backedFixed Annual
World Animal Road Accident Awareness Day
DuPage County government material identifies October 10 as World Animal Road Accident Awareness Day and notes the Cats Matter campaign origin, providing public-sector corroboration of the d…
Source-backedFixed Annual
World Day for Animals in Laboratories
The campaign’s official history identifies 24 April and traces the observance to 1979; NAVS also marks the date in current advocacy material.
Source-backedFixed Annual
World Day for Farmed Animals
FARM’s organizational history says World Farm Animals Day began in 1983 and is now called World Day for Farmed Animals; FARM reporting identifies the annual observance date as 2 October.
Source-backedFixed Annual
World Hamster Day
The Animal Medical Center repeatedly lists World Hamster Day on April 12 in annual pet-awareness calendars.
Source-backedFixed AnnualIn-depth guide
World Horse Day
A/RES/79/291
Source-backedFixed Annual
World Jellyfish Day
NOAA Ocean Exploration published “Happy World Jellyfish Day” on November 3, 2019 and explicitly stated that the day was being observed then; Vancouver Aquarium also labels World Jellyfish D…
Source-backedRule Based AnnualIn-depth guide
World Migratory Bird Day
UNEP / CMS / AEWA partner campaign
Source-backedRule Based Annual
World Naked Gardening Day
The Naturist Education Foundation’s WNGD page states that World Naked Gardening Day is always the first Saturday in May and gives 2 May 2026.
Source-backedRule Based Annual
World Veterinary Day
World Veterinary Association (WVA)
Source-backedFixed AnnualIn-depth guide
World Wildlife Day
A/RES/68/205
Source-backedEdition Specific
World’s Largest Pet Walk
Pet Partners lists the 2026 World’s Largest Pet Walk for 26 September and describes it as its signature annual fundraising walk.
Source-backedRule Based Annual
Zoo Awareness Weekend
Freedom for Animals states that it holds Zoo Awareness Weekend every year and places it on Easter Weekend because that period is typically busy for zoos.