Wow. Never knew that. And yeah, global warming sounds like it'd be a huge problem in that regard. I'm also mildly curious about the mechanics of how temperature determines sex.
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They may not be sabertoothed but when I see large felines up close and witness their teeth, it brings a shudder of awe and fear. It is incredible what they are capable of, but one would rarely have the opportunity to see them in action so close. And witnessing their strength face to face is far different than through a computer screen.An interesting and ever increasing detail that has only relatively recently become so evident to the scientific community is, is that members of Machairodontinae despite having relatively weak bites and a unique method of dispatch by leveraging action of the canines have the sufficient flexural and toughness in the biomechanics of those fangs to penetrate flat bone. Oddly, this came about in a way the community had not quite so expected to see, such as by intraspecies conflict where sabertooths had not only purposefully bit one another on the frontal bone, the bites penetrated and were fatal be action of the elongated canine. Which is to say effectively the teeth of at least Smilodon and likely other members are "armor penetrating", and while flat bone is relatively thin and easily penetrated compared to long or short bone, it was considered previously impossible or just unlikely this action could be undertaken, let alone at the deflection angle that the frontal bone has and at the relative density it has.
This further throws a lot of the "brittle teeth" hypothesis out and better explains how, without doubt, felines expressing these traits were able to not only dispatch prey but also kill one another in mortal conflicts. This is, as an aside, further supported by previous evidence that showed that at least some Machairodontine felids had a taste for hominids and that the skull-bite was, in fact, just as practical with other organisms.
All of that is to say the teeth are very well evolved weapons, beyond even what humans previously understood or thought.