Primates, especially our close relatives, can sweat, just not as much as humans. https://www.kamilarlab.org/single-post/2018/02/22/sweaty-primates-give-clues-ab

Primates, especially our close relatives, can sweat, just not as much as humans. https://www.kamilarlab.org/single-post/2018/02/22/sweaty-primates-give-clues-about-the-evolution-of-human-sweating https://www.kamilarlab.org/single-post/2018/02/22/sweaty-pri... Sounds like humans' sweat capability is also scaled up.