Our prohibited items page lists the following that should not be sold on craigslist:
Household pets of any kind including dogs, cats, primates, cage birds, rodents, reptiles, amphibians, fish. Re-homing with small adoption fee OK. Pet animal parts, blood, or fluids - including to stud/breeding service
This is a craigslist site policy. If you want to sell a pet, animal parts, or breeding services, please do not use craigslist to do so.
A small adoption fee may cover things such as vaccinations, microchip registration fees, and basic veterinary wellness examinations. If you require a fee, please specify its amount in your posting.
It is also perfectly acceptable to advertise a pet to be given away for free, although we encourage posters to make sure that such pets go to good homes to prevent animal abuse and/or neglect.
We ask readers to flag postings that do not follow these policies.