Im not that teknikal but i kan link to a toppic of mine.
https://forums.funcom.com/t/pet-kill-one-of-ther-owners-npc/174812?u=vagnartheviking
its hard to catch them, you here them and may get a glimt of the act before the NPC is killed.
Ihave vittnes it on Gustaf the reliable and one more, the name excape me. (it was a girl)
when i spawned in named ones from the city they attacked a cupple more.
(the two goats attack as well)