Acquiring a Breeding Cat

https://www.pawpeds.com/cms/index.php/en/education/articles/genetics/pigment-parade

RESPONSIBLE CAT BREEDING GUIDELINES

Code of Practice for Canadian Catteries

Messy Beast answers: 

https://www.senecaanimalclinic.ca/feline-leukemia-virus-vaccinate/

The Feline leukemia virus vaccine is a non-core vaccine in Canada, meaning it is not one of the mandatory vaccinations required for your cat at vaccinations. 

Although it is  "recommended by vets, especially for kittens and outdoor cats and is boosted yearly to provide protection against disease for those cats at risk of infection", we do NOT recommend this vaccine.  Administering it in conjunction or separate from core vaccines nullifies all health guarantees in our contract.