Highly recommend CHROMA presets
Sandra Winther Art Creature Brushes for Procreate
80 brushes for creating real and fantasy creatures in Procreate. Check the previews to see what the pack contains. Among other things: Brushes to easily make feathers, horns, teeth, skeleton parts and scales.
(This pack has 2 fur brushes, but you can also check out my fur brush pack for a full pack with over 40 different fur brushes.)