Headbutts hurt the brain, even for a musk ox. “The damage was similar to what’s seen in people with chronic traumatic encephalopathy, a disorder known to be caused by repetitive head hits”. Source: Science News

Posted by

Headbutts hurt the brain, even for a musk ox

A little damage may be OK, scientists suspect, since their daily life is not super complicated.

Two musk oxen stand in the snow, about to butt heads.
The brains of headbutting musk oxen have signs of damage, a new study shows. Raffi Maghdessian/Aurora Open/Getty Images Plus

Share this:

By Laura Sanders

May 25, 2022 at 7:00 am

Punishing headbutts damage the brains of musk oxen. That observation, made for the first time and reported May 17 in Acta Neuropathologica, suggests that a life full of bell-ringing clashes is not without consequences, even in animals built to bash. 

Although a musk ox looks like a dirty dust mop on four tiny hooves, it’s formidable. When charging, it can reach speeds up to 60 kilometers an hour before ramming its head directly into an oncoming head. People expected that musk oxen brains could withstand these merciless forces largely unscathed, “that they were magically perfect,” says Nicole Ackermans of the Icahn School of Medicine at Mount Sinai in New York City. “No one actually checked.” 

In fact, the brains of three wild musk oxen (two females and one male) showed signs of extensive damage, Ackermans and her colleagues found. The damage was similar to what’s seen in people with chronic traumatic encephalopathy, a disorder known to be caused by repetitive head hits (SN: 12/13/17). In the musk ox brains, a form of a protein called tau had accumulated in patterns that suggested brain bashing was to blame. 

In an unexpected twist, the brains of the females, who hit heads less frequently than males, were worse off than the male’s. The male body, with its heavier skull, stronger neck muscles and forehead fat pads, may cushion the blows to the brain, the researchers suspect. 

The results may highlight an evolutionary balancing act; the animals can endure just enough brain damage to allow them to survive and procreate. High-level brainwork may not matter much, Ackermans says. “Their day-to-day life is not super complicated.” 

Questions or comments on this article? E-mail us at feedback@sciencenews.org

Citations

N.L. Ackermans et alEvidence of traumatic brain injury in headbutting bovidsActa Neuropathologica. Published online May 17, 2022. doi: 10.1007/s00401-022-02427-2.

Laura Sanders

About Laura Sanders

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s