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
Sirius hemispheres. Just as the appearance of Sirius in the morning sky marked summer in Greece, it marked the onset of winter for the Māori, whose name "Takurua" described both the star and the season. Its culmination at the winter solstice was marked by celebration in Hawaii, where it was known as "Ka'ulua", "Queen of Heaven". Many other Polynesian names have been recorded, including "Tau-ua" in the Marquesas Islands, "Rehua" in New Zealand, and "Ta'urua-fau-papa" "Festivity of original high chiefs" and "Ta'urua-e-hiti-i-te-tara-te-feiai" "Festivity who rises with prayers and religious ceremonies" in Tahiti. The Hawaiian people had many names for Sirius, including