Cat's cannibalistic tendencies

So I tried to google it but the answers were vague and I'm curious as a fellow cat owner.
Our cat is old like she's with us for 13 years now and still manages to give birth to dozens of babies. Each time, she actually eats them like a fucking snack. I wonder if you guys experience the same thing cuz I hate seeing carcasses of headless kittens.

Yes she gave birth this time, again.