If a dog (as an example) flies into the U.K., they get quarantined for 6 months at the owners expense before they can be released into general population. And thatโs with current health conditions certification.
An ethical breeder should screen you and get you enough to offer you the tips, tricks, advice, or other resources (books, training classes) that they feel will be necessary for you and the pup to have the best shot at working out well together.
A good quality/ethical breeder might be a person you ask lots of questions before you buy a puppy from them but a good ethical quality/breeder will in turn ask you* several questions to make sure you are capable and wanting to care for the puppy properly.
Breeders might charge less for a puppy that has some issue that excludes it from shows altogether (like an unrecognised coat colour, eg: a white German shepherd)
Today owners who abuse dogs are only recorded if reported to that countryโs dog protection unit, normally not a governing body but a charity. No blockchain registry exists.
Dogs are thought to have originated some 15,000 yrs ago from China, where researchers believe wolves were first tamed as pets. The first recorded dog show was in the United Kingdom in 1859.