 Despite these problems, the MSR test is still treated as the gold standard in the study of self-awareness, which illustrates the value that humans place on visual self-recognition, and our failure to appreciate that other animals may recognize themselves through other sensory modalities. Additionally, the MSR test presupposes that the animals tested care in some sense about their appearance. This is a necessary requirement for them to be motivated to interact with the mark. The fact that this is taken for granted in discussions on the MSR test illustrates the importance that we grant to mirrors delivering our expected self-reflection. However, it is not immediately obvious that all animals should care about this. Instead, whether or not they do will likely be shaped by their particular ecology and evolutionary history. For example, a tiny fish, the cleaner wrasse, has been recently shown to pass the MSR test, attempting to scrape off the mark in the presence of a mirror and ignoring it if it was colorless or there was no mirror available (Kohda et al. 2019). This initially surprising result becomes less so when one considers that this species of fish feeds off the parasites that they visually detect on the skin of other fish, and the mark that was planted on their head was intentionally made to mimic the color, size, and shape of one of these parasites. In the cleaner wrasse’s Umwelt, this mark is clearly something worth attending to, but it might not be the case for all species. Other animals, for instance, might care much more if their coat smells in an unexpected way than if there is some debris on their head.