The Conversation: Sun dogs, rainbows and glories are celestial wonders – and they may appear in alien skies too Sun dogs, rainbows and glories are celestial wonders – and they may appear in alien skies too Krista Stoltenberg (33) knew that her three-year-old son, Easton (3), always looked for rainbows, but when he explained why, it broke her heart. | TAG24 ... FARGO — Rainbows are caused by the reflection and refraction of sunlight inside liquid water droplets.

Understanding the Context

Rainbows always appear opposite the sun in the sky, which is why you see them in the morning or ... The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of wolves. Also called the domestic dog, it was selectively bred during the Late Pleistocene by hunter-gatherers. Dogs and the modern gray wolf share a common ancestor.

Key Insights

[4] Dogs were the first species to be domesticated over 14,000 years ago, before the development of agriculture, though genetic studies suggest ... As humans became more sophisticated, so did their dogs. Eventually, there emerged specific breeds of dogs, custom-bred to suit the breeders’ local needs and circumstances. What is a dog? A dog is a domesticated mammal of the family Canidae and the order Carnivora.

Final Thoughts

Its scientific name is Canis lupus familiaris. Dogs are a subspecies of the gray wolf, and they are also related to foxes and jackals. Dogs are one of the two most ubiquitous and most popular domestic animals in the world. (Cats are the other.) Dogs diverged from gray wolves (Canis lupus) and became domesticated at least by ~14,200 years ago (Bonn-Oberkassel dog burial). The domestic dog is a domesticated canid descended from gray wolves, exhibiting extreme variation in size, coat, and behavior due to domestication and selective breeding.