Hello! That's actually an original track made for the game! It's called "A Prehistoric Mind on Mating". I'll post the soundtrack on YouTube sometime in the future. Glad you enjoyed it!
Oh sorry, late response. I am ChellayTiger on Youtube. Here's a link to it: https://www.youtube.com/@salmaneyes2366/featured
https://chellaytiger.bandcamp.com/album/by-your-hands-soundtrack-vol-1 Also here's the bandcamp with all the songs in the game so far.