Pets in EQL do NOT lower any exp, unless the owner of that pet, or the group he/she is in does 0 (zero) damage to the NPC which they are attacking. I've played a Magician for over 12 months up until the release of EQ2, at one point pets did take exp but it was patched awhile later(this happened a long long time ago). Mysticwind may have played EQL during that time, but as of now they do not take exp unless your groups, or your own damage is 0. So.. Hopefully that has passed it's self on to EQ2 =)