Monday, 31 December 2012

Starvation Didn't Wipe Out Sabertooth Cats

Around 12,000 years ago at the end of the Pleistocene, some of Earth's biggest mammals started going extinct — mammoths, mastodons, cave bears and dire wolves among them.

The cause of this mass die-out is still debated, though some researchers have pointed to dwindling food resources, possibly driven by warming temperatures and competition with humans, as a culprit. A new study suggests, however, that at least two of these long-gone creatures, sabertooth cats and their feline cousins, American lions, didn't starve to death.

Big carnivores facing scarce resources often gnaw their prey to the bone and signs of this voracious eating behavior are evident in the wear and tear on their teeth. But the teeth of sabertooth cats and American lions from the La Brea Tar Pits in California have no such marks that would indicate a period of distress before extinction, the new analysis shows.

Read on:

No comments:

Post a Comment

You only need to enter your comment once! Comments will appear once they have been moderated. This is so as to stop the would-be comedian who has been spamming the comments here with inane and often offensive remarks. You know who you are!

Related Posts with Thumbnails