They show nature scenes and animals of all kinds. They have some artsy parts. It is almost like a music video. They play relaxing and energetic music. There are a lot of dogs but also birds, rhinos, zebras, aquatic scenes. It appears to be videos from around the world, maybe Egypt, Turkey, Europe, America. There are dogs being walked on city sidewalks and dogs running free in the country.
An article I read said that dogs are not very visual and that "smell-o-vision" would have been more to dogs' liking.
Most articles concluded that the channel was to ease dog owners' guilt for not being home. One of my cats likes to watch it. I find it relaxing except for the arty part and when when people are talking.
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Impermanence.