A responsible pet food manufacturer may also choose to implement external audits and voluntary certifications such as ISO 9001:2008 and ISO 14000 through an [http://www.iso.org/iso/home.htm external accreditation institute]. | A responsible pet food manufacturer may also choose to implement external audits and voluntary certifications such as ISO 9001:2008 and ISO 14000 through an [http://www.iso.org/iso/home.htm external accreditation institute]. |