I wonder too... I went into Petcetera recently and saw them selling caged pets with a sign that said, 'we won't sell animals of different sexes so as to not encourage breeding'...This is pretty lame as it is still pretty easy to obtain caged animals of different sexes from different stores. With Easter around the corner, and the hordes of rabbits that will be bought and them dumped at the SPCA, it reminds me of the importance of not selling small animals from pet stores.
I hope the SPCA will go ahead with this campaign and perhaps try to educate Petcetera on the importance of not selling live animals.