In theory for a better selection the parents or one of the two parents must be
radiographed hips.
It will have to be tattooed and to have had its first vaccines.
You must have in your possession the notebook of vaccination as well as the chart
of tattooing or that of the microchip as well as the sale contract which will
stipulate you the selling price, the possible defects of your pups or all other
anomalies.
Of course all that on a form specific to the sale.
You must have in the three months who follow the sale the pedigree
of your dog which it is or not defects that it will prevent it from reaching
the confirmation.
This will enable you to have the exact origins of your and dog and to avoid
the cheatings of somme breeders.
The breeder will have to give you a form explaining you all the steps
to be followed during the first 12 months (maintenance of the ears, food, health
etc...).
You must leave with a pup in good health without any anomaly on the level its
hair and its ears.
After which, you will have a marvellous companion who will be you to give joy
and happiness.