Well if an animal sees different electromagnetic radiation frequencies than we do then it’s possible that our complexion would appear different (and maybe in some manner of pattern) to said animal versus a human. It’s possible our melanin responds in patterns that are noticeable under other em frequencies outside of what our eyes perceive as light. I imagine this could be tested with equipment sensitive to em bands outside human visual perception.
Well if an animal sees different electromagnetic radiation frequencies than we do then it’s possible that our complexion would appear different (and maybe in some manner of pattern) to said animal versus a human. It’s possible our melanin responds in patterns that are noticeable under other em frequencies outside of what our eyes perceive as light. I imagine this could be tested with equipment sensitive to em bands outside human visual perception.