Ok, so a 650nm laser is what color ? google it, yes it is red
100% red light emitted from the laser diode.
Well dogs and cats can see it, anyone can try it.
$5 laser pointer cats will chase the laser dot, dogs will also.
I does not matter if the critters can process the color as red or white or blue light, just the fact that they will see it.
The PVS14 will not see any color at all, but does a great job for looking around at night.
Image is in green and black, it will amplify ir light , red light, blue light, green light and all will be seen.
You just cannot tell the color, because the device cannot distinguish between different wavelengths.
The device simply will amplify the light intensity as long as the light is within the devices bandwidth, its not color specific.
Unless a coyote eyes are very different from a dogs eyes the laser pointer test will disprove the theory that dogs cannot see red. They see it just like they will see a blue laser or a green laser.
If they cannot see color they will see it as white/grey and spook all the same.
So assuming that because they cannot see color they are blind to anything red, a new red hunting suit will let you walk up to the coyote and just grab them. A coyotes eyes have adapted to night hunting very well, I have watched them for several years, and with no moon they can be approached to within 20-25 yds, with 1/8 moon 140yds. So with very little light they have far better night vision then Eye do.
Not seeing red when hunting during sunrise and sunset would be a plus, I guess millions of years of evolution gets somethings right.
They also freak out when a red laser is switched on pointed at them, hogs do as well. If red worked so well a $30.00 red laser would be all that is needed. Why spend thousands of dollars on an IR laser, after all the critters can't see red so they wont be spooked. Everyone that has hunted hogs and coyotes know that a red laser pointer will send them running, thats why they drop the cash on the ir lasers to make it harder for them to see.
I will post a video when I get home of me using a red laser hog hunting, and when the red laser is switched on the hog jumped and stood still for a split second, enough time to pull the trigger. The hog was 80yds away, and the laser is switched with a pressure switch that is silent. The other hog could not see what was happening as it was very dark and just stood frozen, when the red laser was switched back on and pointed at the second hog it took off running. So they see something.
I think the fact the perception of red color is getting lost in plain sight, as b/w is far better for low light viewing. Seeing color has nothing to do with bad [beeep] night vision like the yotes and cats have, hogs not so much.