Wolves retain armor rating once armor is removed.

[CatoConroy]

In 1.20.1 (Forge) equipping armor on to a wolf raises the armor rating, however once your remove/unequip the armor from said wolf, the armor rating is retained. Meaning you can stack multiple armors on top of each-other rating wise.

HOW TO PRODUCE:

1. Equip an armor on a tamed wolf.
2. Unequip the armor.

OPTIONAL:
3. Equip an additional armor on to the wolf, adding to the glitched/retained armored rating.