Over 30 years ago I made brushes from the hair of my dogs that have wonderful character.
I used one of my dog's hair to add body so it would hold paint and added hair from my other dog out the outside to give it a curl. As I recall the tricky part was holding all of this in place at the end of a chopstick while I wound dental floss around it to secure it. Lastly, I covered it all with clear nail polish. Over the years I probably used them thousands of times. They have iron oxide stains on them from years of use with decorating work in clay.
I used one of my dog's hair to add body so it would hold paint and added hair from my other dog out the outside to give it a curl. As I recall the tricky part was holding all of this in place at the end of a chopstick while I wound dental floss around it to secure it. Lastly, I covered it all with clear nail polish. Over the years I probably used them thousands of times. They have iron oxide stains on them from years of use with decorating work in clay.