Sirius astrological symbol was listed by Heinrich Cornelius Agrippa. Many cultures have historically attached special significance to Sirius, particularly in relation to dogs. It is often colloquially called the "Dog Star" as the brightest star of Canis Major, the "Great Dog" constellation. It was classically depicted as Orion's dog. The Ancient Greeks thought that Sirius's emanations could affect dogs adversely, making them behave abnormally during the "dog days," the hottest days of the summer. The Romans knew these days as "dies caniculares", and the star Sirius was called Canicula, "little dog." The excessive panting of dogs in hot weather was thought
Ancient of Days icons, the Ancient of Days is sometimes identified with God the Father or occasionally the Holy Spirit; but most properly, in accordance with Orthodox theology he is identified with God the Son, or Jesus. Most of the eastern church fathers who comment on the passage in Daniel (7:9-10, 13-14) interpreted the elderly figure as a prophetic revelation of the son before his physical incarnation. As such, Eastern Christian art will sometimes portray Jesus Christ as an old man, the Ancient of Days, to show symbolically that he existed from all eternity, and sometimes as a young man, or wise baby,