I set one on my alt character (unarmored), and it did around 7-8 damage. According to the wiki, it should do 8-23, for an average of 15.5. This is definitely what I remember from T2A.
A forest ostard hit me for 7 or 8 per hit today

Also, frenzies should have 170 to 179 dex. They spawned like this until sometime in UO:R when that pack instinct thing kicked in and they nerfed them to spawn at 125 and under.