If you do want to buy a pedigree dog or cat, ask your local vet if they know a reputable breeder. The Irish Kennel Club (IKC) has a list of registered dog breeders who must abide by certain rules. The GCFI (Governing Council of the Cat Fancy of Ireland) can help put you in touch with cat breeders.
Any breeder should provide all the relevant paperwork, like pedigree registration papers, vaccination certificate, health screening certificates and a written medical history from a veterinary practice, detailing vaccinations and worming. All dogs must come with a certificate of microchipping, this is a legal requirement for all dogs in Ireland.
You should always be able to visit the mother with the litter of pups. It can be useful to meet other dogs in the household as this can give you an idea of their temperament and how the pups are likely to have been raised. Seeing where the pups have grown up is very important. If they have spent all their time in kennels with little or no exposure to everyday life, then it might be more difficult for them to adjust to family life in a house. You should also ask whether any related litters have been diagnosed with any inherited disease.
Breeders should be happy for you to contact their vet and other buyers of their puppies. Reputable breeders are very proud of the animals that they have produced and will be happy to give you the information you want. They are also quite likely to ask you for references so that they can be sure that you will be able to provide a suitable home.
We would strongly advise not to buy any animal online. Most reputable breeders don’t advertise, they don’t need to as they generally have waiting lists. Many of the pups advertised online come from puppy farms where the welfare of the pups and the parents may not be a priority.