164 votes
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How could dragons be explained without magic?

Growth / size The main argument against mountain-sized dragons is the square/cube law. As an animal increases in size in its linear dimensions, but retains roughly the same proportions, its surface ...
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  • 45.6k
163 votes

Realistic Santa and Reindeer

How many kids? This is the toughest factor to find. While Santa isn't specific to a single religion, traditions differ in various parts of the world, and belief rates in Santa Claus are not tracked ...
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  • 7,196
122 votes
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Why isn't a magical obligate parasite living in a wizard library exterminated?

Regarding: There is no benefit for a wizard or mage to keep this creature around. I disagree. The parasite feeds on remnants of magic power used from experiments or spell casting. Often, it ...
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  • 5,705
97 votes

Dragons and aviation bureaucracy

Dragons would run the FAA One day, you're flapping along, torching pigeons, and those runty little ground creatures that taste good with ketchup start making an awful racket. "Must be that Henry ...
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  • 45.6k
86 votes
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What clothes would flying-people wear?

Everyone else is speculating when there are proper reality check examples. Flight suits that allow for free movement of wings, legs and tail are a thing. Some also contain diapers, so that your bird ...
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84 votes

Anatomically Correct Succubus

Warning - answer below might not be suitable for some readers. Sounds to me like a parasite is the most likely evolutionary track. We can imagine a creature like Cymothoa exigua - but instead of an ...
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  • 2,278
82 votes
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Why is clothing turned inside-out my weakness?

Totally different perceptual system. Mythical creatures clearly don't prey on humans because they have to; they do so because they can. They have not evolved with human beings, they often come from a ...
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  • 52.3k
78 votes

What Purpose Would a Unicorn's Horn Serve in the Wild?

It could be an organ for communication. As we know, Dolphins and Whales communicate by sonar sound waves. The teeth of dolphins are arranged in a way that makes them act like sonar antennae (read ...
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  • 15.2k
75 votes

How would tiny dragons strike TERROR?

Cities in the Middle Ages were flammable. Like, really flammable. London suffered from two devastating fires and several smaller ones before the Great Fire of 1666 that destroyed most of the inner ...
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  • 14k
73 votes

Plausible explanation for lack of reflection in a mirror

Alternative answer to keep the spirit of "mirrors as vampire detectors" for a very futuristic setting: In a high-tech world, mirrors could be obsolete and replaced with smart 3d screens which show a ...
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  • 43.6k
73 votes
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How do I keep my slimes from escaping their pens?

Bundt cake pen. Frisky slimes gotta move! If it hits a dead end it will start looking for cracks or go up the wall. But if there is a path of least resistance the slime will take it. It will head ...
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  • 277k
72 votes
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Anatomically Correct Medusa

Before you read on, I’d like to first apologize for the length and any glossing over of subjects in my answer. Not sleeping well will do that ... and I doubt I’ll be sleeping after having written this....
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68 votes
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Plausible reason for gold-digging ant

Why would ants unearth pieces of gold? What evolutionary purpose would this behavior serve? It makes their chimneys work better. The workers gather the gold and bring it to the colony. The soldiers ...
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66 votes

Why isn't a magical obligate parasite living in a wizard library exterminated?

Easy. They can't. Why are rats not exterminated easily? Cockroaches? Pigeons (in big cities, I remember an anecdote about one city that had a population of 50k pigeons, killed 120k over a few years, ...
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  • 3,069
65 votes

Physically, how do dragons grasp and *transport* the contents of their hoards?

If you're a dragon, why are you gathering coins one at a time? If I'm a dragon, the biggest baddest dude on Middle Earth or Faerun or wherever, I'm not going to pick-pocket people. I'm not robbing ...
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  • 84.3k
62 votes

How to not starve gigantic beasts

The creatures eat rocks. The excreta from this is fertile loam that is ideally suited to farming. They can be trained to eat from rock formations in such a way as to create walls and fortification. ...
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60 votes
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How do I scientifically explain a specific type of wood piercing through armor when not even bullets can?

The monster doesn't have armor - it has blubber. Bullets don't bounce of the monster - instead they penetrate, but not deep enough to pass through the protective layer of blubber. The blubber ...
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59 votes

How would tiny dragons strike TERROR?

just to add to the other answers: Tiny dragons setting an entire city on fire not only is realistic, we have something similar in our world too: Let me introduce you to the Australian Firehawk Raptor ...
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  • 896
59 votes
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What kind of deadly ranged weapon can pixies use against humans?

Don't bother killing humans, kill their stuff! When you kill a human they go crazy. Humans with weapons and blue flashing lights appear with big scary dogs that can smell pixies and chomp them down, ...
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  • 43.4k
58 votes
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Anatomically Correct Griffins

I hate to say it, but I can't really come up with a way to justify gryphons, or at least flying ones. Their body structure is such that flight seems impossible, and if they could fly they would have ...
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  • 31.1k
57 votes

Werewolves have the same fur color as their human form's hair color. What gave humans the idea that they're all gray?

It was night time Werewolves are smart and deadly predators. It's rare for someone to see one and survive, and actual colours are hard to tell when all you see is a flash in the moonlight. They're ...
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  • 43.2k
55 votes

Kaijuu-like monsters killing humans: What is their viable reason to do so?

They don't need one. Let's say you take a walk. You're killing millions of microorganisms every time you breathe. You might step on ants and hardly notice. Crunch a snail when you aren't looking. ...
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54 votes

Shapes for an infinite animal?

You specify "creature", but would a fungus fit your requirements? Taking inspiration from Armillaria ostoyae, one example of which is the largest living organism, covering 3.4 square miles of the ...
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  • 1,166
53 votes

How do I keep my slimes from escaping their pens?

Glass jugs Make them big enough to accommodate your slimes; the slime should fill the bottom few inches and most of the jug should be empty space to prevent escapes. A slime that climbs up the wall ...
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  • 84.3k
52 votes

What Purpose Would a Unicorn's Horn Serve in the Wild?

Display. A peacock's display feathers have no practical function and exist solely to demonstrate the animal's fitness as a potential mate. From a practical perspective, its display feathers are ...
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  • 1,080
50 votes

Realistic Santa and Reindeer

If people are living in a virtual reality, Santa will be a parallel process that can scale up as needed to handle everyone at the same time. Since the virtual realm will have been designed with Santa ...
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  • 68.5k
50 votes

What does the Minotaur eat?

Insects Tasty tasty insects. If insects aren't plentiful enough in the Labyrinth, he can supplement his diet with spiders. The Minotaur needs food which is calorically dense, but doesn't require ...
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  • 45.6k
49 votes

Plausible explanation for lack of reflection in a mirror

When your world allows psychic powers (for which you can often find a pseudo-scientific explanation), you could say that vampires are actually completely invisible and their physical appearance is ...
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  • 43.6k
49 votes

Why isn't a magical obligate parasite living in a wizard library exterminated?

The librarians like them. Wizards don't like the creatures, but librarians like them. For one thing, it keeps the wizards from casting spells in the library. Any librarian will tell you that spell-...
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  • 11.3k
48 votes
Accepted

How do centaurs get enough calories to live?

A 1000 pound horse needs approximately 15,000 calories a day for maintenance, the average 160 lb human needs around 1800. Take 70% of a horse and 50% of a human, that gives you about 11,400 calories ...
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  • 1,177

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