How can a lion who has huge fangs carry their babies by biting them in the neck and doesn't hurt them?

Nobody has really shown yet why this works. So here goes.

Here is a lioness

Pretty badass teeth. And here's one carrying a cub

Same teeth. Now the lion cub is completely relaxed. Not a single muscle is used here. The lion here is not closing her mouth completely, like in the first picture. It's more like this, slightly open

All the bones of the lion cub fit perfectly in there without being put under pressure by the teeth. And the relaxed muscles mean that the skin and fur can move around freely, draping around the teeth. It's more like a gate holding the cub in place. The larger fangs stop the cub from falling out.