Sure, it wouldn’t be black. If it was a pure red (absolutely no other colours, just pure 100% red) then it wouldn’t have a colour to a dog. It would have a shade, and it certainly wouldn’t be absolutely pitch black but close enough. If, however, it’s not a pure red then it would appear yellow or blue as in the picture you posted.
That doesn’t make sense. They don’t interpret the hue as we do, but they still see different brightness, red wouldn’t be just black.
Here’s a dog vision simulation
Sure, it wouldn’t be black. If it was a pure red (absolutely no other colours, just pure 100% red) then it wouldn’t have a colour to a dog. It would have a shade, and it certainly wouldn’t be absolutely pitch black but close enough. If, however, it’s not a pure red then it would appear yellow or blue as in the picture you posted.