He organized the first World Animal Day on March 24, 1925, at the Sport Palace in Berlin, Germany.

It is sometimes cited, incorrectly, that World Animal Day started in 1931 at the convention of ecologists in Florence, Italy, who wished to highlight the plight of endangered species.

[7] In Argentina, this day has been observed on April 29 since 1908, promoted by Ignacio Lucas Albarracín, president of the Animal Protection Association of Buenos Aires.

Coincidentally Albarracín would die on the same date in 1926, making it a day to also pay tribute to him for pioneering the animal's rights movement in the country.

Many countries such as Bolivia, Bahamas, China, and Colombia have community driven annual events to promote the global celebration.