Tyrannosaurs may have nibbled each other when mating
That is the message of bite marks on their jaws
HOW DO PORCUPINES mate? Very carefully! An old joke, but one that applies even more forcefully to creatures with big, sharp teeth than it does to those with big, sharp spines. And few creatures have had teeth bigger and sharper than those of Tyrannosaurus rex.
This article appeared in the Science & technology section of the print edition under the headline “Crimes of passion”
From the October 2nd 2021 edition
Discover stories from this section and more in the list of contents
Explore the editionMore from Science & technology
Can you breathe stress away?
Scientists are only beginning to understand the links between the breath and the mind
The Economist’s science and technology internship
We invite applications for the 2025 Richard Casement internship
A better understanding of Huntington’s disease brings hope
Previous research seems to have misinterpreted what is going on
Is obesity a disease?
It wasn’t. But it is now
Volunteers with Down’s syndrome could help find Alzheimer’s drugs
Those with the syndrome have more of a protein implicated in dementia
Should you start lifting weights?
You’ll stay healthier for longer if you’re strong