the lion wasn't putting his nails out .. i think it was playing ... anyway , watch the baby mom she was really scared even her laugh the voice of it was afraid to get something bad to the baby . WOW how's the mom feelings !!
We can not be sure that it wants to "eat" the baby. Maybe it wants to play or carry the little one, just like they do with their childs (with the mouth). And no salivating by the way.