fox, rabbit, mink, chinchilla, marten, fisher, muskrat, karakul and all other fur-bearing animals, raised in captivity for breeding or other useful purposes shall be deemed domestic animals;
such animals and the products thereof shall be deemed agricultural products; and
the breeding, raising, producing, or marketing of such animals or their products by the producer shall be deemed an agricultural pursuit.
(Apr. 30, 1946, ch. 242, § 1, 60 Stat. 127.)