Trustworthy Enchantment (Weapon Enchantment)

Since we're getting wolf armor and more people will be using wolves in battle, it makes sense to add a enchantment maybe called 'Trustworthy' for weapons that stops them damaging tamed animals. For example, sweeping edge on a sword can be very tricky in close-quarters combat and you can end up breaking your wolf's armor and sometimes accidentally killing it. This enchantment could work by doing less damage (this model would use levels like I, II, and III) or just negating all damage (this would be like mending: only one level).