If you are asking about combat skills, the chart at http://wiki.projectgorgon.com/wiki/S...tibility_Chart is a great resource. It's missing the new bard skill but since that's not compatible with animals, that's ok... The only cow/bat compatible combat skill requiring something special is necromancy which needs a necromancy gem somewhere. I think you can find them on chest items and with the current event, there are also a lot of necromancy-enabling necklaces dropping. Some staffs enable necromancy, but I do not think that works for animals since they can't properly wield the staff.

For non-combat skills, there was some discussion at https://forum.projectgorgon.com/show...nds-and-skills several months ago - I think Hoxard's summary a few posts down is still correct.