The documentary film "I'm Thinking About a Cat" originated from 36 exposed film rolls discovered near a trash can. These rolls revealed the life of Anton in the 1960s, who photographed various subjects including chickens, relatives, friends, and car races. After Anton's passing, his son Raitis continued to use the same camera for his own photography. The filmmakers utilized these preserved photographs to construct the narrative. The film has a runtime of 1 hour and 25 minutes.