So several characters in Demon Slayer have strange heightened senses, and these aren't regarded as especially unusual. Case in point; Tanjiro inexplicably has an extremely keen sense of smell, to the point of being able to smell the emotions and intentions of those around him. It's been mentioned that at least one other character in his canon can do this, but I'm not sure if that counts as a "super power" that he would lose upon arrival (he got Pooka so he'll just get it back if that's the case, so it's mostly just a timeline thing for me).
The second question being something I honestly forgot he can do because it's only briefly mentioned ...like, once in passing, but he can apparently understand animals?? I don't exactly think this means he can speak a separate language, but one of the other lead characters has a sparrow in place of a messenger crow all the Slayer Corps members have assigned to them, and Tanjiro can understand and talk to the sparrow when Zenitsu can not. The messenger crows can talk and everyone seems able to hear/understand them, but only Tanjiro is ever mentioned or shown talking to Chuntaro.
thinking emoji
So several characters in Demon Slayer have strange heightened senses, and these aren't regarded as especially unusual. Case in point; Tanjiro inexplicably has an extremely keen sense of smell, to the point of being able to smell the emotions and intentions of those around him. It's been mentioned that at least one other character in his canon can do this, but I'm not sure if that counts as a "super power" that he would lose upon arrival (he got Pooka so he'll just get it back if that's the case, so it's mostly just a timeline thing for me).
The second question being something I honestly forgot he can do because it's only briefly mentioned ...like, once in passing, but he can apparently understand animals?? I don't exactly think this means he can speak a separate language, but one of the other lead characters has a sparrow in place of a messenger crow all the Slayer Corps members have assigned to them, and Tanjiro can understand and talk to the sparrow when Zenitsu can not. The messenger crows can talk and everyone seems able to hear/understand them, but only Tanjiro is ever mentioned or shown talking to Chuntaro.