Speculation: Dark Matter Intelligence

 

Wikipedia: Dark Matter possibly Mass in extra dimensions

In some multidimensional theories, the force of gravity is the unique force able to have an effect across all the various extra dimensions,^[14] which would explain the relative weakness of the force of gravity compared to the other known forces of nature that would not be able to cross into extra dimensions: electromagnetism, strong interaction, and weak interaction.

 

In that case, dark matter would be a perfect candidate for matter that would exist in other dimensions and that could only interact with the matter on our dimensions through gravity. That dark matter located on different dimensions could potentially aggregate in the same way as the matter in our visible universe does, forming exotic galaxies.^[13]

 

If this is the explanation of Dark Matter, then such exotic galaxies may contain "Dark Intelligent Life Forms". In this case, we may never make contact.