The dog must be dewormed before rut and when it is already pregnant it must be given supplementary food or simply balanced food for puppies.
The dog must also be vaccinated (especially against distemper, parvovirus and coronavirus) so that it can transfer the puppies all the antibodies against those diseases during the first 48 hours of breastfeeding.
It is advisable to check the development, number of puppies and the probable date of birth with an echography at the 30 and 50 days of pregnancy.