From the blog "Being A Cow ChangeLog"
Version 2.0.9
added tint mask support for npc cows. Now each time a cow head is applied, the original tintmask from that npc's prefab head should be restored
added options to optionally make BAC mutations cause BoS (Bimbos of Skyrim) corruption if you have that installed
added hand footstep sets to the stage 13 hands as well
fixed two calls to SLIF in bac_camerapos.psc to point to NiOverride when SLIF is not installed
moved tats color selector from the BAC set