Here's why:
* Fiber structure: Felt is made from fibers that are tangled and interlocked. Wool fibers have a unique structure with scales that allow them to interlock easily. Rabbit fur, while soft, doesn't have the same scales and structure that makes it ideal for felting.
* Durability: Rabbit fur tends to be less durable than wool, and it might not hold up well under the heat and pressure involved in felting.
* Cost: Rabbit fur can be more expensive than wool, making it less practical for large-scale felt production.
However, Angora rabbit fur is sometimes used in the production of very fine and luxurious yarn, which can be used for knitting and crocheting. This yarn is known for its incredible softness and warmth, but it is also often more expensive than wool.
So, while rabbit fur is not a primary material for felt, it's still used in the textile industry for other applications.