It appears to vary from species to species. For example, Octopus aegina has it; but Octopus vulgaris does not.
Yes, octopuses have eyes. They use their eyes to see and navigate their environment by detecting light and shapes. Their eyes are well-developed and provide them with good vision to help them find food, avoid predators, and communicate with other octopuses.
octopuses can cchange and blend in with all kind of colors
they can be any color
Generally, no. Most dogs have decent vision, but not as good color vision as humans.
Different animals have different kinds of color vision. Some have very poor color vision and others have very good color vision. In fact some birds and bees have super color vision and see colors that humans don't see.
Yes, octopi does have rods and cone in it's eye. Otherwise it could not see.
Wild Freaks of Nature - 2011 Alligator Night Vision Super-Silk Spinning Spiders Intelligent Octopuses was released on: USA: 2011
It depends on where the octopi is. It is supossed to camouflauge
Yes, they do.
Yes, you can see color in your peripheral vision.
Yes , bottlenose dolphins have acute vision both in and out of water. Scientists do not know for sure if they can see in color or not though!
One can have a color vision test on the 'Color Vision Testing' website which tests for color blindness. One can also have a similar test at their local opticians.