National Association of Professional Pet Sitters  
   Membership benefits, insurance, certification, newsletter, events, locator search engine, educational tools, and a reading room.
   http://www.petsitters.org/

Pet Sitters Associates, LLC  
   Pet sitters' organization that includes liability insurance with membership.
   http://www.petsitllc.com

Pet Sitters International  
   An educational organization for professional pet sitters which provides you with the benefits you need and want, at a price which fits your budget.
   http://www.petsit.com/

Pet Sitters Yellow Pages  
   Worlds largest collection of pet sitters. Provides email and web site links.
   http://www.petsitters.com/

PetDex  
   Local and national listings for pet care service providers.
   http://www.petdex.com

Pet-Sitters.biz  
   Global directory offers registered members a searchable database of pet sitting services and dog walking services. Add as business to the directory, or look for pet sitter work.
   http://www.pet-sitters.biz

The Pet Sitter Portal  
   Directory of pet care professionals, breeders, shelters and other pet related products and services listed by region.
   http://www.petsitterportal.com

Worldwide House and Pet Sitting  
   Find a sitter or request a sitter free of charge. Sitters may pay to be added to the list.
   http://www.housepetsit.com/

Pet Sitting Info  
   Find a pet sitter or advertise a sitting service.
   http://www.pet-sitting.info/

Petsit USA  
   Locate professional pet sitters, dog walkers and dog daycares throughout the USA. Includes checklist to assist when interviewing pet care professionals.
   http://www.petsitusa.com

Pet Sitting Form  
   A pdf-format document for owners to complete when leaving their pet with a sitter or a kennel.
   http://www.homeandoffice.hp.com/hho/downloads/pdfs_petsittingform.pdf

Zoocare State Index  
   Search for a sitter.
   http://zoocare.com/petsitting/stateindex.html

Yahoo Groups: AboutPetSitting  
   Email list for sharing business tools, stories, support, and the responsibilities that are involved to run this type of business.
   http://finance.groups.yahoo.com/group/AboutPetSitting/

All Canadian Pet Services Network  
   Membership listings by area and a description of current and possible future member benefits.
   http://www.acpsn.com

Pet Sitter's Center  
   Searchable listings.
   http://www.petsitcenter.com

Puppy Walkers  
   Find dog walkers, view walker ratings and read customer reviews. Requires registration to search for walkers.
   http://www.puppywalkers.com

Meetup: Pet Sitters  
   Local groups for pet sitters and pet owners to meet and exchange information about pet sitting opportunities.
   http://petsitter.meetup.com/

Setia Dogs  
   Comprehensive guide to dog daycare, dog boarding and pet sitting in the US. Features frequently asked questions and special offers from participating dog daycare facilities.
   http://www.setiadogs.com

PetSitterBank  
   Trade pet sitting services with other pet owners.
   http://www.petsitterbank.com

FindPetCare.com  
   Find pet sitters and dog daycare. Some facilities offer online reservations.
   http://www.FindPetCare.com

The Pet Sitter Forum  
   Online community for pet sitters. Chat about day-to-day issues and ask questions about starting and managing a pet sitting business.
   http://www.thepetsitter.com/forum

Pet Owners United  
   Online club that aims to link up pet owners across the UK who are willing to offer mutual holiday pet care. Overview, registration and FAQ.
   http://www.petownersunited.co.uk/