This app was mentioned in 6 comments, with an average of 12.00 upvotes
> it'd be neat to see a side by side picture of what humans see and what the dog can see
Even better, there is a phone camera app that lets you see everything like your dog sees it. https://play.google.com/store/apps/details?id=fr.nghs.android.cbs.dogvision&hl=en
Hope you're on android, someone posted this below.
https://play.google.com/store/apps/details?id=fr.nghs.android.cbs.dogvision&hl=en
This app for android "Dog Vision" will show you what the dog sees, it's pretty neat.
https://play.google.com/store/apps/details?id=fr.nghs.android.cbs.dogvision
"DogVision" will use your camera and show you how dogs see the colors. It's neat. https://play.google.com/store/apps/details?id=fr.nghs.android.cbs.dogvision&hl=en
There are a few apps that use you camera and show dog-vision. Quite interesting to see the world through their eyes. It can help understand why they are interested or not in something you are trying to do too. Here is one I've tried. Not a great app and the quality is a bit poor but the idea works.