How do I teach my dog the difference between dog toys and baby toys?

I never realized until I was pregnant how similar they are! One of my three dogs is a toy monger. The best toy is a toy another dog is playing with. The other two could care less (probably because they never get a chance to play with them).

Since we have a baby on the way, how do I teach the dog which toys are not his?

What health testing do you do on your dogs before you breed?

What genetic health testing do you do? What is it called and what is it testing for? What breed do you have and why do you test for it?

Thanks!