Microchip Connection  
   Providing a state-wide mobile implantation service for horses and pets, with an explanation of the technology and details of the database. Riverside, California, USA.
   http://www.microchipconnection.com/

American Veterinary Identification Devices - AVID  
   Developer and manufacturer of microchip technology for identifying wild animals, livestock and pets. Includes company information and portal to international sites. Head office in Norco, California, USA.
   http://www.avidid.com/

Pet ID UK Ltd.  
   Supplying implantable products for horses and pets, as well as veterinary information and distributor details. Hurstpierpoint, West Sussex, United Kingdom.
   http://www.pet-id.net/

Chip Your Pet  
   Providing microchipping services in London, United Kingdom. Includes an explanation of the process and a list of authorised agents.
   http://www.chippet.com/

Allflex New Zealand Ltd  
   Supplier of livestock tags and pet implants using radio frequencies. Includes product specifications and information about industry standards. Palmerston North, New Zealand.
   http://www.allflex.co.nz/2.html

Microchips4Solutions, Inc  
   Manufactures implantable devices and readers for pets, with product description, manual, FAQ, and North American database. Mitchell, Ontario, Canada.
   http://www.microchipsolutions.com/

Jeross Telemetry  
   Manufacturing and distributing custom-made tracking systems for use with pets, people and wildlife. Includes specifications and suggested applications. United Kingdom.
   http://www.jeross-telemetry.co.uk/

Trovan Ltd  
   Developer and marketer of radiofrequency technology for the electronic identification of birds, wildlife, and marine animals. Includes a recovery database service for microchipped pets and a list of international distributors. United Kingdom.
   http://www.trovan.com/

Allflex USA, Inc  
   Producing visual and electronic identification systems for large animals and pets, with details of technology and applications. Manufacturing facilities in Boulder, Colorado, and in Dallas-Fort Worth, Texas, USA.
   http://www.allflexusa.com/

APEIS: Animal Permanent Electronic Identification System  
   Suppliers of integrated products for livestock management, with FAQ and links to industry-specific subsidiaries. Norfolk, Nebraska, USA.
   http://www.apeis.com/

Dalton ID Systems Ltd  
   Manufacturer and international distributor of electronic livestock identification systems, with details of services and list of overseas divisions. Headquarters in Henley-on-Thames, United Kingdom.
   http://www.daltonusa.com/

Eidap, Inc.  
   Distributor of implantable devices and tags for pets, horses and livestock. Includes FAQ and slide show of applications. Sherwood Park, Alberta, Canada.
   http://www.eidap.com/index.html

Idology  
   Offers implantable and attachable RFID tags and readers for livestock and small animals.
   http://www.id-ology.com/

GrowSafe Systems Ltd.  
   Offers implantable and attachable RFID management systems for livestock.
   http://www.growsafe.com/

Ketchum Manufacturing Inc  
   Making and distributing identification tags and systems for pets, livestock and aquaculture. Features product catalog and company information. Ottawa, Ontario, Canada.
   http://www.ketchum.ca/

Leader Products P/L  
   Manufacturer and distributor of visual and radio-frequency tags for the livestock industry, with company history and dealer network. Melbourne, Australia and Aukland, New Zealand.
   http://www.leaderproducts.com.au/

Easytrac-ID  
   Distributor of electronic identification products and reading devices for pets, horses and birds. Includes product specifications, insertion information and a searchable database. Antwerp, Belgium. [Also in German, French and Dutch]
   http://www.easytrac-id.com

Digital Angel Corporation  
   Developers of radio frequency identification products for use in fisheries, companion animals and livestock. Includes lost pet database. South St. Paul, Minnesota, USA.
   http://www.destronfearing.com/

HomeAgain  
   Microchip for pets. Features product information, news, and a lost pets database.
   http://www.homeagainid.com/

Agrident  
   Supplier of electronic identification for animals. The product range consists of transponders as well as portable and stationary readers.
   http://www.agrident.com