(a) The term ``fur-bearing animals'' has reference to animals which
bear fur of marketable value and includes, among other animals, rabbits,
silver foxes, minks, squirrels, and muskrats. Animals whose fur lacks
marketable value, such as albino and other rats, mice, guinea pigs, and
hamsters, are not ``fur-bearing animals'' which within the meaning of
section 3(f).
(b) The term ``raising'' of fur-bearing animals includes all those
activities customarily performed in connection with breeding, feeding
and caring for fur-bearing animals, including the treatment of disease.
Such treatment of disease has reference only to disease of the animals
being bred and does not refer to the use of such animals or their fur in
experimenting with disease or treating diseases in others. The fact that
muskrats or other fur-bearing animals are propagated in open water or
marsh areas rather than in pens does not prevent the raising of such
animals from constituting the ``raising of fur-bearing animals.'' Where
wild fur-bearing animals propagate in their native habitat and are not
raised as above described, the trapping or hunting of such animals and
activities incidental thereto are not included within section 3(f).
