A revisit to the science of the evolution of dogs’ eyes.
I presented a fairly long explanation of how dogs evolved in a recent post Those Eyes. It was based on an article in The Atlantic magazine.
The AAAS magazine Science, 12th July 2019, VOL 365 Issue 6449, also had an item.
It is reproduced below and I hope it sufficiently clear that you can read the text.
If the text is not clear let me know and I will amend this post by including the above text as a typed addition.