The Westford Health Department permits and inspects Piggeries and Stables on an annual basis for sanitary conditions. Any property stabling a horse or in ownership of 10 pigs or more would need to obtain a permit through the health department.
At this time there are no permits required for any other breed of animals through the health department. We recommend maintaining a clean and sanitary area for housing any animals. It is the property owner's responsibility to not create a nuisance that impedes on storm drains, or a neighbor's enjoyment of their property.
Resources
Right To Farm By Law
Disposal of Dead Livestock and Equines
Backyard Chicken Resources