Chap. 993. 909 port, comprising permanent crash crewmen, fire control men, assistant fire control men, members of police and fire departments not classified in Group 1, employees whose regular compensation is paid by the United States from funds allocated to the Massachusetts National Guard and who are regularly and permanently employed under the control of the military department of the commonwealth and whose duties in such employment require substantially all normal working hours and whose continued employment is based upon federal recognition in the Massachusetts National Guard, employees of a municipal gas or electric plant who are employed as linemen, electric switchboard operators, electric maintenance men, steam engineers, boiler operators, firemen, oilers, mechanical maintenance men and supervisors of said employees and employees of the department of correction who are employed at any correctional institution or prison camp under the control of said department and who hold the position of correction officer, female correction officer, industrial instructor, recreation officer, assistant industrial shop manager, industrial shop manager, assistant to the supervisor of industries, supervisor of industries, senior correction officer, senior female correction officer, supervising correction officer, supervising female correction officer, prison camp officer, senior prison camp officer, supervising prison camp officer or assistant deputy superintendent. Approved November 8,1971. Chap. 993. An Act begulating the operation op pet shops. Be it enacted, etc., as follows: Section 1. Section 1 of chapter 129 of the General Laws is hereby amended by adding the following definition:— "Pet Shop", every place or premise where birds, mammals or reptiles are kept for the purpose of sale at either wholesale or retail, import, export, barter, exchange or gift. Section 2. Said chapter 129 is hereby further amended by inserting after section 39 the following section:— Section S9A. Every person engaged in the business of operating a pet shop shall obtain a license therefor from the director, the fee for which shall be fifty dollars, and such license shall expire on December the thirty-first following the date of issuance, unless sooner revoked. The director, subject to the approval of the governor, may make rules and regulations governing the issuance and revocation of such licenses and the conduct of the businesses so licensed and relative to the maintenance of premises, buildings and conveyances, the health of the birds, mammals or reptiles and the method and time of inspection and checking of said animals. This section shall not apply to a publicly or privately owned zoological park, a publicly owned animal pound, an institution, as defined in section one of chapter forty-nine A, to persons selling, exchanging or otherwise transferring the offspring of their personally owned animals, or to horse or cattle auctions. Section 3. Section 43 of said chapter 129, as amended by section 2 of chapter 416 of the acts of 1946, is hereby further amended by inserting after the word "thirty-nine", in line 3, the words:—or thirty-nine A, Approved November 8,1971,