I've kinda held off on posting as I havent rewatched these movies in years and remember next to nothing about them, (and in the case of felidae, what i do remember is rather unpleasant and interesting) however they might contribute to discussion if anyone else remembers them
it was a fair amount of years ago now, but I remember my youtube diving brought me across three movies from around the 80's. bagi the mighty monster of nature, the elmchanted forest, and felidae. I hardly remember anything from the first two outside of both having a slightly downer ending to them and both having anthropomorphic characters, bagi was an anime (that supposedly was all "don't screw with nature recombinent dna sequencing!" though I don't remember) and the other was just an animated movie from yugoslavia about a painter who gets magic powers after sleeping under a tree, and has to defeat an evil thistle/cactus king. as for felidae, that one was outright a vulger and violent little animated film, with some aspects that I almost want to see in a warriors movie if you can get rid of the sexual and overly vulger elements (the nightmares felt like visions from the warriors series and could work in that context, the designs for most of the characters were great outside of maybe one or two cats, the gore if done right would help accentuate the impact of certain scenes that have occured in the books, and the animation style blends almost to well with how that series already has depicted its characters in the side mangas/comics/graphic novellas, etc.).