Eclipse Dragons are uneasy about dragons or Caretakers that are well-lit. If they are approached by someone in the daytime, they will often reposition themselves so that they are flying in between the Caretaker and the Sun, putting the person in the shade.
Eclipse Dragons are more commonly energetic at night or on cloudy days - any time the sunlight isn't shining. During a solar eclipse, Eclipse Dragons are ecstatic to the point of mania. They race around the island in circles, rustling leaves and play-fighting with one another. After the sun comes out again, they settle down and head back to their habitats.
Eclipses aren't the only celestial events that cause Eclipse Dragons to behave differently. In fact, many Caretakers have noticed that Eclipse Dragons are more or less social depending on the lunar phase. When the Moon is waning, Eclipse Dragons are more outgoing, whereas when the moon is waxing, they tend to stay by themselves.
Epic Eclipse Dragons love eclipses when they occur naturally, but they don't always wait for nature to take its course. During one colossal meeting of Epic Eclipse Dragons, the dragons flew in unison up to the sky and blackened out the Sun, creating a dragon-made eclipse. With more Epic Eclipse Dragons arriving to assist, the blackout lasted 12 days before the Eclipse Dragons decided to call it quits.
Very rarely by breeding a dragon that provides the Cosmic color with a dragon that provides the Black and White colors.
DISCLAIMER: Breeding a dragon that provides the Cosmic color with a dragon that provides the Black and White colors may produce other offspring aside from the 日蝕龍. To view all the possibilities, check the Breeding Calculator.
Cosmic can split into Purple and Yellow. However, if it is split, then Cosmic is no longer in the pool for the duration. This means that a combination that relies solely on the Cosmic color split to introduce the presence of Purple and Yellow cannot produce a Cosmic hybrid that also needs the Purple or Yellow colors.