For Owners: In this poster they start to address the issue of 'prescribing pressure' i.e. owners asking for or demanding antibiotics from their veterinarian:
DON’T EXPECT ANTIBIOTICS
Do not demand antibiotics if your veterinarian does not prescribe them; in most cases it is not appropriate
to use antibiotics in a precautionary manner. Unless your animal is seriously ill and is admitted to an animal
hospital for care, always ask your veterinarian if the prescribed antibiotics are really necessary, or if
something else could be tried first.
The American Veterinary Medicial Association has an informative page, with many links to other resources:
The stewardship portion is based on a research article:
Guardabassi L, Prescott JF. Antimicrobial Stewardship in Small Animal Veterinary Practice: From Theory to Practice. Vet Clin N Am – Sm Anim Prac 2015. 45(2):361–376. (sorry no access to the full paper).