https://pastebin.com/iUfMGjvb
It seems that tamed foxhounds are still considered as hostile entities.
I noticed this because golems will attack them and with the mod CarryOn I couldn't pick them up until I allowed in its config the capability to pick up hostile entities.
Not sure if this is intended.

I'm using latest version of Quark in 1.12.2: r1.6-177.