"Do not take your child to see the puppies otherwise you will definitely come home with one" See I would take my child to see the puppies, would ooooh and aaaaah over how cute they are, would then say I'd decided no, walk away and explain to my child exactly why, even if they were upset. But then I am a hard bitch have very definite views on these things which I am not afraid to express, even at the cost of upsetting small children.
I'm not in the market for a puppy, but a few years ago we went into a pet shop where there was a cage with a cuuuute baby rabbit in it with a sign on which read "this bunny is free when you buy a suitable cage."
DS begged and begged round the shop for us to take the bunny home, to rescue it from the pet shop, and all the way round I said no, no, no, and explained "loudly" to him that if we take that rabbit home and come back tomorrow, there will be another bunny in the cage, and so the trade continues.
And then we left. And the next time we went there there was a baby bunny in a cage with a sign which read...... And thus I was proved right.
I believe it's important that children need to learn from an early age why we can't just always save an animal even if we feel it needs saving, and why some practices are not ones which should be encouraged, and that by giving money to certain people endorses trades which should have ceased decades ago.
But I do understand why some find It difficult to do that and would just rather not go at all.