Step #64 in the Expanded Vanilla list
Catherine - Darknut - PeterBitt
Featured in Mod Lists:
This mod adds unique textures to all blighted animals. Including retextured vanilla textures and Darknut's 512 or 1024 textures.
If you aren't looking to add HD textures to the game you can still use this as there is a vanilla option as well (and I highly recommend you do check it out).