this achievement was bugged when i got it and i don't remember anything about it being fixed in the patch logs, so here is what you do to make sure you get it

- get scratch to the camp
- get owlbear to the camp

the owlbear will come several times, every long rest you can have a cutscene with him: first he will ask for food, the next night he will ask to heal him, and after that you can get the scene for the achievement

the bug was that if during the achievement scene you have the speak with animals buff it will not unlock.
so when you got the night where the owlbear asked you for healing make sure not to cast that buff on yourself until the scene on the video appears: