CLOSE
Original image
iStock

Why Do Male Lions Have Manes?

Original image
iStock

Much like the defining features on many animals, a lion's mane is all about attracting the ladies.

A century or two ago, biologists like Charles Darwin postulated that lions grew a thick mane of hair around their necks to protect that vulnerable area from attacks by other lions. Over time, however, field biologists observed lion behavior (from a safe distance) and noted that when lions fought one another, they rarely went for the mane region. Instead they regularly attacked from the rear, targeting the back and the hindquarters.

So, if the mane isn’t designed for protection, what is its purpose? Why, propagation of the species, of course. In the sweltering heat of areas where lions gather, a huge ring of long hair around the face and neck does nothing to help cool the body. That bushy fringe is an inviting home to a variety of parasites, and it also makes the lion stand out against the scenery (a desirable trait for a fashion model but not so much for an ambush hunter). With all those negatives attached to sporting neck hair, the only positive is that it takes some sturdy genes and a very healthy constitution for a male to live long enough to grow a substantial mane. Over the centuries, lionesses have twigged onto the fact that a huge, lush, thick, impressive head of hair equals a virile baby daddy who has the stones to not only sire her cubs but also to aggressively protect them along with the rest of the pride. Even more attractive? A dark, flowing mane, according to studies.

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

Original image
iStock
arrow
Big Questions
What Is the Difference Between Generic and Name Brand Ibuprofen?
Original image
iStock

What is the difference between generic ibuprofen vs. name brands?

Yali Friedman:

I just published a paper that answers this question: Are Generic Drugs Less Safe than their Branded Equivalents?

Here’s the tl;dr version:

Generic drugs are versions of drugs made by companies other than the company which originally developed the drug.

To gain FDA approval, a generic drug must:

  • Contain the same active ingredients as the innovator drug (inactive ingredients may vary)
  • Be identical in strength, dosage form, and route of administration
  • Have the same use indications
  • Be bioequivalent
  • Meet the same batch requirements for identity, strength, purity, and quality
  • Be manufactured under the same strict standards of FDA's good manufacturing practice regulations required for innovator products

I hope you found this answer useful. Feel free to reach out at www.thinkbiotech.com. For more on generic drugs, you can see our resources and whitepapers at Pharmaceutical strategic guidance and whitepapers

This post originally appeared on Quora. Click here to view.

Original image
iStock
arrow
Big Questions
Do Cats Fart?
Original image
iStock

Certain philosophical questions can invade even the most disciplined of minds. Do aliens exist? Can a soul ever be measured? Do cats fart?

While the latter may not have weighed heavily on some of history’s great brains, it’s certainly no less deserving of an answer. And in contrast to existential queries, there’s a pretty definitive response: Yes, they do. We just don’t really hear it.

According to veterinarians who have realized their job sometimes involves answering inane questions about animals passing gas, cats have all the biological hardware necessary for a fart: a gastrointestinal system and an anus. When excess air builds up as a result of gulping breaths or gut bacteria, a pungent cloud will be released from their rear ends. Smell a kitten’s butt sometime and you’ll walk away convinced that cats fart.

The discretion, or lack of audible farts, is probably due to the fact that cats don’t gulp their food like dogs do, leading to less air accumulating in their digestive tract.

So, yes, cats do fart. But they do it with the same grace and stealth they use to approach everything else. Think about that the next time you blame the dog.

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

SECTIONS

arrow
LIVE SMARTER
More from mental floss studios