The eyes have it
What if you can see reflections of eyes but can only guess the animals they might belong to?
Then do your best guess 😃 Often lifting your head up or down a bit to get a different perspective on your monitor might reveal an outline of a creature. Every monitor is different and some have big differences in contrast and brightness depending on what angle you are viewing it on (this is a lot easier to see with dark objects on the screen).
I've spotted many a wilderbeest and zebras lurking in the shadows using this technique. You can also of course use an image editing software (like IrfanView) to manipulate the contrast/brightness.