(2) However, ORS 601.010 to 601.130 do not apply to:
(a) The slaughtering and handling of animals for human consumption or to the dissection of animals for scientific research.
(b) Persons in cities and towns who gather up and dispose of the bodies of dead fowl, cats, dogs and other small animals, if they gather up and dispose of such bodies of small animals in the regular course of their garbage business.