If you ask a Spanish hunter who is Ibizan Hound breeder, why not apply for FCI papers, you get the answer that the breed got along several thousand years without breeding associations and it is ultimately due to the hunters that they still exists in its original.
For Hunters are hunting skills of the dogs far more important than their beauty. And these abilities surpass the normal dogs by far.
This jumping ability to change direction in the air, which is still fully preserved sense of smell and excellent hearing; everything together with an intelligence that surpasses all other races far, make the Ibizan Hound to number 1 in the hunt. It is used in packs of 8-10 dogs that actually hunt completely independently and need neither the hunter nor his rifle.