From 1930 to 1931, he worked with the cinematographer and entrepreneur Voldemar Päts at the studio of the well-known photographer Aleksander Teppor [et] on Suur-Karja Street in Tallinn on the first Estonian animated film, Kutsu-Juku seiklusi (The Adventures of Juku the Dog).
[10] For this purpose, drawn sample characters were already ready, which were also published in the newspaper.
His killer was a drunk former office clerk, Eero David Taurio, with whom he shared an apartment there.
[11] Jaanimägi's funeral took place on November 13 in the crematorium chapel in Helsinki, Finland, and his body was cremated.
A commemorative stone with a drawing from the film Kutsu-Juku seiklusi stands on his grave.