All the sources I found said that cave bears were primarily herbivorous, but since bears are omnivorous in general I'm not questioning Mori-sensei here. There's actually a list of sources at the end of the book, so perhaps they're worth taking a look at (rhetorically, because I'm not gonna track down a Japanese reference book just for a single tidbit about cave bears, haha).
In any case, this chapter ends on quite the cliffhanger, so I'm not going to disappear for another 9 months again or anything, I swear!
