contrary to popular myths – dogs can see colour, but only blue and yellow, not red – their colour perception is better at the blue/ultraviolet end of scale then ours which is more aimed at red end (because of need for finding ripe fruits)
https://www.rover.com/uk/blog/can-dogs-see-colours/
Parker and Hart
Mastroianni and Hart
contrary to popular myths – dogs can see colour, but only blue and yellow, not red – their colour perception is better at the blue/ultraviolet end of scale then ours which is more aimed at red end (because of need for finding ripe fruits)
https://www.rover.com/uk/blog/can-dogs-see-colours/