Questions tagged [creature-design]

For questions regarding the viability of a life-form design. These questions should focus on biologically plausible creatures.

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37
votes
12answers
10k views

Creature that swims in the solid ground

I have a moment in my story where the main character comes across a planet with "solid" swamps. Let me explain. Basically, there are creatures here that can swim through the ground like it was some ...
24
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3answers
4k views

Naming the forces of the Purgatory?

I'm trying to build a world loosely based on ideas about afterlife in Christianity. In my world God is nowhere to be found and supernatural forces are split into three factions: Hell, Heaven & ...
24
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4answers
17k views

How can I develop scientific names for my species'?

I'm building a fantasy world and I am building the animals that inhabit it. Now I am working on the animals that live in this world, and after building their anatomy, I wonder about their names. I'm ...
23
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8answers
2k views

Dragon script/writing system — how would it work?

Let us assume we have our prototypical European dragon representative over here, George. He has four ground-limbs with four clawed digits including an opposable digit on the forelimbs, normally is ...
16
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3answers
979 views

How would a tail affect fighting styles? Or would it have basically no effect?

There are several varieties of tails that I am interested in: Fully Prehensile Tails, able to manipulate objects, carry weapons/ shields (though note they may not be able to wield them effectively) ...
49
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5answers
6k views

Anatomically correct sharknado shark

Raining animals is a rare meteorological phenomenon in which flightless animals fall from the sky. Such occurrences have been reported in many countries throughout history. One hypothesis is that ...
37
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16answers
8k views

What kind of supernatural powers don't break the masquerade?

I'm designing a world a of supernatural beings loosely based on Christianity/Judaism as described in Naming the forces of the Purgatory? who visit Earth without humans being aware of them. They ...
20
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6answers
3k views

The Biological Dullahan

On my quest to make pretty much every single fantasy creature biologically feasible I have come across a hiccup. It wasn't angels, no you people helped me with that. Demons are easy, we have plenty of ...
17
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4answers
1k views

Biological ''Helmet''

What I'm thinking about is simply an animal,any with a protective bony-like shell covering its eyes. The shell must be openable for clear vision but when closed the animal still has the ability to ...
15
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5answers
596 views

Feasibility of a Crystal Ecosystem

In my Fantasy world there exists a crevice. Plants and animals made of glittering, iridescent crystalline structures in abundance. The crevice can contain any arbitrary materials that might make the ...
27
votes
15answers
5k views

In a world without obstacles, would life evolve wheels?

Imagine a planet whose surface is perfectly spherical, without any kind of obstacles anywhere. In such a world, it would be a competitive advantage for any lifeform to evolve wheels, as transport and ...
22
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14answers
5k views

Can we use science to explain a creature that feeds on emotion?

This is a magic world question, and we certainly do not have anything on this planet which feeds on emotion. But if we did, I'm wondering how it might work with a look at science for something ...
21
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14answers
4k views

Alternate uses for dragon wings? [closed]

So since there’s that pesky thing called the square cube law, it’s pretty universally accepted that large dragons have no chance at actual flight. However, all is not lost for the concept of giant ...
21
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9answers
7k views

How to increase the efficiency of lungs

Humans (and mammals) have 2 lungs, one right and the another left. The right lung has 3 lobes and the left have 2 lobes because in the "third" there is the heart, so the right lung is bigger than the ...
20
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7answers
6k views

What traits would a species need to survive in magma?

How might such a species evolve? How would they swim, navigate and breed? How big could they grow, and what complications might arise out of their growing very large?
12
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1answer
2k views

Anatomically Correct Slimes

Slimes are a common monster we often see in games such as Minecraft, Terraria and Slime Rancher, but it is never explained how such an animal can exist. How could the body of such an animal even exist ...
31
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8answers
6k views

Could a creature have eyes that change color based on their mood?

In various fantasy stories I have read and seen there is a trope known as Eye Colour Change Warning: TV Tropes!. In many cases the person or creature's eyes change color as a sign that they are ...
25
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6answers
9k views

Are dragons cold or warm blooded?

My world is science-based with an earth-like biology. The dragons fly when they're young and then grow too heavy and can only glide if at all. They breathe fire by expelling gas and igniting it. They ...
18
votes
2answers
1k views

Anatomically Correct Boar Troll

I request some help with the design of one particular denizen of my fantasy world, tentatively named Boar Troll. It needs to be an ungulate or closely related creature with emerging sentience, and ...
17
votes
1answer
1k views

Could this Very Specific Dragon Fly?

For starters, allow me to define more carefully what I am asking. For now I am not worried about any of the following, as if this question is answered they will be covered in later questions: Bones ...
17
votes
7answers
7k views

What could make an insect race intelligent?

TL;DR: I want a society which behaves as a hive. Is it plausible and how to achieve this? The setup: Different planet in our universe. In other words: Normal, physical rules apply, there is no magic ...
17
votes
6answers
1k views

What is the most plausible ancestor for tool-using, sentient, bipedal reptilians?

A classical trope of fantasy is lizardfolk, or a similar species by another name (see for instance the Argonians of Elder Scrolls fame). In general, though, we're dealing with: Bipedal, often ...
16
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6answers
2k views

Is it possible for an organism to evolve to generate its own nuclear power?

Is it possible for an organism to evolve to biologically generate its own nuclear power? If so, how would this evolution occur?
15
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12answers
4k views

How could an animal run fast using blade-like feet that sink into spongy ground?

In my fictional planet, forests grow not on soil, but on vast spongy mats of fungi. Traditional Earth-like feet would struggle to get grip on the squishy ground, so most megafauna taxa have feet like ...
14
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4answers
4k views

Just how big can I make this dragon?

For over a thousand years, the dreaded dragon Lohebrand has roamed the plains of the east. His breath melts mountains, his shadow blots out the sun, the earth trembles beneath his talons – or so the ...
10
votes
2answers
412 views

Why (else) would an animal species be polymorphic?

I'm inspired by the comments discussion on a (now deleted) question by XandarTheZenon. We're preconditioned to think in terms of a 2-sex lifeform, which is natural with diploid genetic material, and ...
8
votes
1answer
946 views

Maximum size for an ant?

The Worlds largest ant is around 1 inch long give or take. I wanted to know how large an ant could grow assuming conditions are perfect. Below are the conditions of their environment; 1: The ...
6
votes
8answers
571 views

What limitations can I put on wings for more tense/risky action scenes?

This is my first post on Stack Exchange, so I'm not sure if this follows the right format. Let me know what I can change to make this more helpful on the site. Anyways, let's get to the backstory of ...
39
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8answers
8k views

What would a Giant’s voice be like?

As per my previous question on giants, if the average human is 5′10″, and he is scaled up to 50 feet whilst remaining proportionately correct, would this have any effect on what he sounds like? I'm ...
38
votes
12answers
6k views

What are the evolutionary benefits of mating for life, as opposed to serial monogamy?

I have a sapient (alien) species that behaves more or less similarly to humans, and that includes their romantic interactions. However, although they court/date each other much like we do, there is a ...
30
votes
8answers
11k views

Why would orcs have tusks?

Ever since Tolkien most, if not all, works of fiction including orcs portray them with tusks. Though this achieves the effect of portraying them as animalistic, what would the real world applications ...
26
votes
8answers
5k views

Creating wood actually as hard as granite

Would it be possible, with genetic engineering, to create a form of tree which produces wood with the same strength/hardness as granite, capable of being used in place of stone for castle-style walls ...
23
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8answers
3k views

How do we create an Anemone Tree?

Those of you who have been listening to the new podcast will know that Andy came up with an idea for an Anemone Tree. The idea is that this "tree" would prey on small animals for some of its needed ...
17
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1answer
1k views

How did the Armatae Bestia evolve studded plates?

Meet the following specimen of Armatae Bestia. I'd describe it, but a picture is worth a thousand words, so I'll just put one here instead (Feel free to drag it into browser window to get a much ...
14
votes
1answer
379 views

(Porcu)pine tree needle firing system?

Info I've created a pine tree that stabs its needles into people. Here's the way I did so: Using genetic engineering, my fictional scientists inserted keratin-producing genes into a pine tree (...
13
votes
2answers
866 views

How plausible would a fully aquatic bat be?

So, it turns out that bats are actually pretty good swimmers; several species of bats have been reported swimming, and they're far more capable and agile in the water than they are on land: https://...
12
votes
2answers
4k views

What would be the proper latin terminology for half-human anatomy configurations?

Many half-human mythological creatures follow a few common anatomical schemes. Some consist of an animal with a human face, such as the sphinx, naga and manticore. Some consist of a human anterior ...
10
votes
12answers
1k views

Would evolution ever favor eye stalks on vertebrates?

A common feature that we consider to be alien is the eyestalk and rightfully so. To my knowledge the only vertebrate that even comes close to having eyestalks is the hammer head shark (if you can even ...
10
votes
5answers
909 views

What kind of animals are my trolls?

Edit: I've written an answer of my own now, and I'd appreciate it if any of you informed on the subject of evolution could review it, then inform me of its plausibility, via the comments (Of the ...
8
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2answers
1k views

Anatomically Correct Xenomorph

Xenomorphs are one of the most dangerous, deadly aliens in movie history. They breed in massive numbers, live in an ant-like society, and have blood that doubles as concentrated acid. Most of those ...
7
votes
3answers
515 views

What factors would allow this caninoid species to evolve successfully?

There's not much on this, so I'm winging it. Plus, I'm curious to see if this species could actually succeed in advancing to the Stone Age. Basically, a species that I have created (the Verrisirs) ...
7
votes
4answers
347 views

How can a lava-eater metabolism explained?

Inspired by A.C.A.C's comment, how can the metabolism of an animal that is harnessing the heat from magma or lava be explained? I'm thinking of conventional "eating lava or magma", but it ...
6
votes
4answers
582 views

Internal, organic cold fusion engine

I have a creature that, thanks to its multiple, unique DNA chains, is impervious to cancer. So now I will move on to the next aspect: energy production. This creature has two types of energy ...
3
votes
1answer
426 views

When creating a human-like cyborg, what 'hardware' and 'software' are critical for survival?

To all Evil Conglomerate Inc. interns, indentured students, and unpaid researchers, Congratulations! After being a nameless henchmen for far too long, you are finally ready for your thesis, to ...
15
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2answers
2k views

How small can humans be before weird stuff starts to happen?

In the world I'm making I want to have very large creatures that will later be used in organic architecture as housing for the human equivalent in this world. In order to make this world realistic I ...
14
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4answers
2k views

Anatomically Correct Mokèlé-mbèmbé

The Mokèlé-mbèmbé (meaning "one who stops the flow of rivers") is a legendary water-dwelling creature of Congo River basin folklore, loosely analogous to the Loch Ness Monster in Western culture. It ...
14
votes
2answers
823 views

Anatomically Correct: Space Plankton

This creature was void-born in the farthest depths of time in this Universe. Drawing its energy from electromagnetic radiation, and sealed against the vacuum of space, this drifting creature ...
12
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18answers
6k views

How can I explain why my race has genders but can't reproduce?

I'm inventing a race for a roleplaying campaign, and I thought about making them live really long lives (or even be immune to ageing) and not be fertile, but I still want them to be male and female in ...
11
votes
4answers
3k views

If quadruped mammals evolve to become bipedal will their breast or nipple change position?

As the title says, you know stuff like minotaur, lycanth or werewolf, cat or dog folk, etc especially for the female specimens. I want to know what happen if quadrupedal mammals which usually have ...
11
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5answers
3k views

Anatomically Correct Leviathan (Intelligent Design) [closed]

Mentioned in various spots in the Bible, the Leviathan is described as a colossal serpentine creature. It is very heavily armored, able to thwart most types of melee weapons, along with some low-...

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