I'm not going to buy pet safe rock salt
What is the reason for using unsafe pet rock salt?
I want my pet to give birth to deformed puppies because I like the way they look.
That is horrible. Using unsafe pet rock salt endangers your pets and their puppies. Trying to manipulate your dog's offspring will end up killing them.
I don't care. The way they get pregnant is not natural.
You should care since you're their owner. They trust you to take care of them and not put their lives in danger. What you're doing a betrayal of their loyalty and love.