Very interesting chapter one. I like Taika and Ao from the start of this chapter. The killing stuff is probably a cover up, someone kill the father, mostly a beastman, and they rip her face off and at some point Taika lick his owner so thats why the blood is in his mouth.
I dont understand ppl who cant understand Ao behaviour. Psychology always says that the person vs a VERY stressful situation = any answer the person can perform/think related at the life experience they had. If somehow our pets kill like a person/animal we all will behave differently. We can broke at that moment, we can be very angry, we can kill ur pet, we can forgive them... All is on us to decide and act. And we can try to justify ur behavior, or not. Is like the case of Rizz in Beastars, how he try to justify for eating tem when another action can be turn himself up, teach with a professor, or his roomates... all is possible.