Registration and ancestry matter more in a young breed
The Biewer Terrier developed from tri-colour Yorkshire Terrier lines, so the paperwork is how you verify what you are actually buying. Expect registration papers for the puppy or litter and a multi-generation ancestry record naming the sire and dam, with colours recorded, since the breed's defining white, black or blue, and gold pattern should be traceable through the family.
Check that names, sexes, and identifying details agree across the registration, contract, and health record. Microchip paperwork, or the chip number and the company it is registered with once placed, should be part of the set. In a breed still building its record-keeping traditions, a breeder whose papers are complete and consistent is showing you something important about their whole operation.
The contract for a very small companion breed
Your signed contract and receipt should cover the health guarantee and its time limits, the return-to-breeder clause, whether the puppy is sold as a companion with breeding withheld, and the breeder's conditions if a hereditary problem emerges. Read any clause about adult size carefully: a breeder can describe the parents and past litters, but written promises of an exact grown weight deserve a sceptical look.
Note the food, feeding frequency, and handover arrangements in the contract or an attached care sheet. For a tiny puppy leaving its litter, the first days run on small, frequent meals, and the breeder's exact routine is the safest starting point to discuss with your vet.
A vet record with weights, not just vaccines
Ask for the health record signed by the practice that examined the litter, listing each visit, vaccinations with dates, worming treatments, and any preventive care. For a Biewer puppy, a weight log is unusually valuable: regular recorded weights show steady growth and give your own vet a baseline for a dog who may weigh very little at handover.
The record or breeder's notes should mention anything observed in the litter, including a puppy who needed encouragement to feed, episodes of low energy that the breeder monitored, or treatment for parasites. Ask the breeder directly what signs of low blood sugar they watch for in small puppies and what they do first, and write the answer down; that is general first-response information your vet can then confirm or adjust for your puppy.
Parent screening to ask for
Request copies of both parents' screening results, which in this breed commonly include a patella evaluation and a recent eye examination, plus any bile-acid or other testing the breeder has done for their lines. Match certificate names to the sire and dam on the ancestry record, and ask about liver, knee, and eye problems in close relatives.
A breeder who tests and talks openly about a young breed's known weak points is protecting the breed as well as your puppy. Keep those answers, dated, with the certificates rather than relying on remembering a conversation from handover day.
Handover notes for coat, teeth, and daily care
Collect the breeder's written guidance on the long, silky coat: bathing rhythm, how the topknot or facial hair is managed, and what brush they use. Add notes on teething and retained baby teeth if the breeder flags them, since small breeds often need a dental check on that point as adult teeth arrive, and your vet will want the breeder's observations at the first visit.
File the registration, ancestry record, contract, weight log, and screening copies together in KinsLe's Pet Passport, so your Biewer Terrier's lineage and health packet are ready as one set for vet appointments, groomers, sitters, and trips away.