Columbia subject headings:
Animals--Social aspects--Bibliography.
Pet owners--Bibliography.
Pet owners--Psychology--Bibliography.
Pets--Bibliography.
Pets--Social aspects--Bibliography.
Pets--Therapeutic use--Bibliography.
Harvard subject headings:
Animals--Social aspects--Bibliography.
Pet owners--Bibliography.
Pet owners--Psychology--Bibliography.
Pets--Bibliography.
Pets--Social aspects--Bibliography.
Pets--Therapeutic use--Bibliography.
Princeton subject headings:
Animals--Social aspects--Bibliography.
Pet owners--Bibliography.
Pet owners--Psychology--Bibliography.
Pets--Bibliography.
Pets--Social aspects--Bibliography.
Pets--Therapeutic use--Bibliography.