If you like the anime version, you should check this out as it might give you some hints on Japari Park's mysteries that are left unanswered.
As of this writing, it hasn't been officially announced that what connection between the anime and this manga version regarding the timeline, but most likely this manga is a prequel to the anime series. The story took place in the flourishing Japari Park where humans and 'friends' (the humanified animal girls) still coexisted.
The story centers on Nana, who is recently accepted as a caretaker at Japari Park. With 20 chapters long, the story spans one year about Nana and
Friends daily life. Unlike the anime which is adventurous and puzzling, this adaptation is a rather comfy and heartwarming story. The Friends possess more intelligence and personality than in the anime. They are skillful enough using and operating some of human stuffs.
In contrast to the anime, the manga's artwork is really good. Instead of using fully anthropomorphized style like the anime, the manga uses semi-bishoujo style. The Friends in this adaptation look really gorgeous and charming. In general the artwork, panelling, and such are above average than most of manga out there. Those were possibly the main reason why I enjoyed this in one sitting.
Best way to enjoy this, you should be aware that this is more of a cgdct (cute girl doing cute things) than a serious one. Nevertheless, it should not be taken too lightly. Upon finishing reading the manga, I realized that the Kemono Friends series has shown a great deal of potential. Mostly because this series has very promising world-building because of its bewildered puzzles that ready to be solved.