Thanks for your interest in this relic. Short answer: with the latest Infinity Sounds + TobEx AfterLife you no longer need the components which restore unique animation/soundset codes as these have finally been externalized. Here is a newer version with just the highland dog and black widow animations (both currently unused) and the restored BG1 palette colors for your convenience.
Previously, I attempted to use Infinity Animations to add these animation codes, but the legacy version of IA doesn't support changing the walking speed of the added animations, which is faster than most BG1 creatures. I'd tested different movement effects/methods and all of them caused issues either with haste or polymorph. The polymorph version of the black bear uses the same creature file as the ones spawning in, e.g., the wilderness areas.
Anyways, I've only recently released Infinity Sounds, so now I need a break before I can resume working on a new version of IA which will allow you to tweak things like animation walking speed, walking sound frequency, foot circle size, blood color, etc.