Unless the majority of the population took similar measures, reducing the possibly of it happening to begin with.

I don't think the cat -killing- the baby is really a risk though. Though I would think (though with no authority... looong way from even thinking about having a kid) that when raising a baby, you want to reduce the number of variables to deal with. That cat messing around with your baby (maybe she'll make him cry a lot) seems to be one of those variables you'll try to eliminate and then introduce later whenever your kid is now at 'chase the cat and make her angry' stage or something.