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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8
votes
5answers
668 views

Behemoth, the Sessile Mammal

This concept is relatively simple. There are many animals which start mobile, but become sessile later in their life history, all of which are simple and primitive. And I was wondering this: what is ...
6
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4answers
218 views

bringing darkness to live

Every child is afraid of the darkness. For them its not simply the absence of light, its the absence of information. Even if you know that there should be a wall or a doorway right in front of you, ...
22
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17answers
4k views

Evolution of a creature that uses light as a weapon

On our world we have any number of creatures that use: Noxious Chemicals Poison(Spiders and Snakes being the obvious examples) Sound Electricity as an alternative to their teeth and claws. One ...
2
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1answer
281 views

How could Kuutamian animals work?

In Ribbontails Series Aman5 there are creatures called Kuutamian animals. These animals are sapient and can have any form. The creator uses the excuse that they have three DNA strands, but how ...
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2answers
108 views

A Different Look to Pteranodon [closed]

Any time we hear the words "Pterosaur" or "Pterodactyl", the one that we'd be most synonymous with is the genus Pteranodon. But in recent years, I've been growing fond of that most spectacular of ...
-2
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2answers
251 views

Explanation for glowing eyes [closed]

I wish there was more to say, this question was inspired by this image. Now I know that they are robots but is there a way that I could achieve glowing eyes in real biology?
16
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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 ...
2
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2answers
246 views

How could trees evolve flight? [closed]

Animals and people can migrate whether you like it or not; now the entire forest of trees gain mobility; in fact they can crawl, swim, leap and even fly. What kind of wings can grow in a tree and ...
16
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6answers
2k views

Would a species evolved for very high environmental pressure necessarily die in lower pressures?

I'm aware that deep sea fish don't actually "explode" when brought to the surface but any air sacs in their bodies would expand and cause them possibly fatal damage. However, what other physiological ...
6
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8answers
629 views

What should be the limitations of a gift-generating power?

I'm working on a set of supernatural creatures, their powers and their culture/social structure. One of these races have the power to make gifts appear out of thin air. They can be anything from ...
2
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1answer
212 views

4 ears, Possible or Inconceivable?

This question has no background information here. I just want to know if there are any evolutionary advantages for a species to have 4 ears?(The kind a mammal has).
7
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3answers
676 views

Phonetic features of human languages spoken by sentient cats

In my world I have a couple species of sentient animals, mainly cats, who among other things are capable of communication with human beings. While I am perfectly happy to resort to explanations ...
5
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3answers
456 views

Consequences of controlling intelligence

Suppose tomorrow, on present-day Earth, a group of scientists published a paper detailing a series of experiments conducted over the last ten years that successfully activated and deactivated the ...
2
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2answers
293 views

How long would these children take to grow up

In the world I am building there are rat-like primates called iolasae, or mane-beast, In this family of primates there are sapient humanoid creatures called lokk, They have digitigrade legs, long arms,...
7
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2answers
959 views

Large spider walking upside down

Many fantasy stories involve large spiders like in Harry Potter. These creatures behave almost exactly like normal spiders despite their size. My question is: can large spiders still walk upside down ...
6
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1answer
633 views

Could two tails work?

In the world I am building there are rat-like primates called iolasae, or mane-beast, which are the new world equivalent of great apes. In this family of primates there are sentient humanoid creatures ...
8
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1answer
236 views

Cloth-eating creature wants to eat synthetic textiles. How?

Based on this question and answer about a human sized creature that lives completely on textiles, how feasible is it for a creature to consume nylon and polyester to derive fats/lipids useful for ...
-1
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1answer
476 views

What would be the most useful were-animals? [closed]

I'm trying to develop a set of "were-animals". The rules of this universe are pretty classic, were-somethings turn into their animal counter-parts on full moons, and once transformed, they look like ...
10
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1answer
285 views

Can a human-sized organism survive eating only textile fibers?

Since there are living beings (like moth larvae) which feed on textile fibers (wool, cotton, silk, et cetera), I was planning to introduce a human-sized creature with such feature, plus the ability to ...
5
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3answers
882 views

Which will survive better, a duck-sized horse or a horse-sized duck? What about the other creatures in this magical world?

In a pre-industrial world where magic is thriving, it is possible for a mage to alter the size of a creature (including other humans). Thus a duck could be made horse-sized. It would have all the ...
3
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2answers
338 views

How would having a spherical carapace benefit an animal?

In my fictional universe, there lived a unique creature resembles today tortoises but with spherical shell. My question is what evolutionary advantage(s) does this shape have? How would said creature ...
3
votes
1answer
398 views

What characteristics would a telepathic, energy-absorbing race of aliens have?

A race of aliens exists on a distant planet whose biological functioning depends on absorbing a specific type of energy. They have what is essentially an antenna through which they passively absorb ...
3
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1answer
125 views

How will a different form of DNA works?

Most species of living organisms have double helix DNA, can there be a tesseract DNA? What benefits does this form of DNA have over the common helix form? Will this form of DNA unique to 5 or higher ...
3
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3answers
312 views

What is a good number of sentient species? [closed]

In a world similar to Earth where multiple species are able to achieve human-like sentience, what is the realistic limit for the number species that will actually achieve it concurrently?
0
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2answers
129 views

Haunted by wererabbit's folksong

I've always been curious whenever I heard the mother wererabbit sings a popular folksong to the young, there is a particular line in the lyric that seems to puzzle me. It goes likes this: "up up and ...
8
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1answer
298 views

Multiple types of life forms of the same species

Lets say there was a life form in a earth-like environment that would go through.. what I can best describe as 'metamorphosis' throughout several separate life forms. It could start out in Phase 1A, ...
4
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2answers
263 views

Species evolved that encourages mutation of some of its embryos

I've been inspired to ask this question based off of my answer, and the resulting discussion, to this question: Why would a species of intelligent parthenogenetics invent males? However, this is ...
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2answers
212 views

Dwarf raising a battalion of dinosaurs [closed]

Set in alternate parallel universe where reality mirror ours with one big exception, the cunning dwarfs. The male adult is less than the length of an iPad but weights 50Kg, their technology is far ...
1
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2answers
358 views

How would sleep cycles work in a world with a years-long day?

This is in my world of balloons and zeppelins, war and peace, day and night. Sleeping may be the least important thing but it is still important. On this world, the day and night cycle is 8.89 of ...
7
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10answers
848 views

Evolved for war

Let us suppose that we have a non-human sentient species that has "evolved for war", i.e. has evolved significantly both biologically and sociologically from a non-sentient state such that its members ...
7
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5answers
693 views

Evolution of a predatory antlered cat?

I am developing an antlered cat, and looking for some help determining the evolutionary advantages and disadvantages of certain physical characteristics. The world is earth-like, and this particular ...
3
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5answers
4k views

Science to justify fire breathing animals? [duplicate]

How exactly can I justify fire breathing animals? I mean, how would they do it in a scientifically and physically possible way?
2
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2answers
317 views

Hammerhead dragon craving for seafood

How can I explain a female adult dragon standing at 30 to 32 meters living on the peaks of a snowy mountain, will dive and swim hundreds of miles into the ocean to hunt for sperm whales and colossal ...
3
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2answers
462 views

Can jellyfish migrate out of water?

Jellyfish is consists mostly water and they live in the ocean, I like to create a world of airborne jellyfish how can I explain the levitating mechanism and evolutionary advantage scientifically?
14
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6answers
2k views

How to Strengthen Bones

This is inspired by our third fortnightly challenge, but a question I've had for a while anyways. Bones are seriously complex structures. Far more complicated than most structural materials humans ...
13
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3answers
385 views

Building the armored octopus

In this recent question, an irresistible image was provided by Samuel that helped to forge the foundation for his question about a weapon design. He glossed over the aspect of the armored octopus in ...
5
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4answers
654 views

Consequences of absence of emotion

I am new here, and my question would be a follow up of this question, Survival without emotion, though not for the same purpose as mentioned in that question, however. Recently, I was pondering the ...
13
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9answers
2k views

Dragon breaking sound barriers unaided

Taking several notable real life inspirations from the animal kingdom I like to design a realistic Dragon towering any creature ever lived but has a nasty habit of generating sonic boom every where in ...
13
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3answers
791 views

Alternate Timeline/Universe where the extinction level incident that occurred 65 million years ago didn't happen

Disclaimer : I'm working on the entire pseudo-science thing , so the scientific part of this whole thing isn't made up properly... Certain things have not been explained , this is to keep the post ...
6
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2answers
337 views

Humanoid evolution

Background We all know that our species evolve during and after the last ice age, (or is it sufficient to say that they evolve at the end of ice age?). A. Initial Condition Suppose I had another ...
8
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2answers
2k views

Underwater spider webs made of slime?

I am imagining a race of spider-like creatures that remain still in the water. They glow to attract prey/would be predators. They surround themselves with a thick layer of slime that can catch ...
4
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5answers
220 views

Really big sharks

Could a shark theoretically exist at the size of a blue whale? Blue whales are apparently the largest animals to have ever existed, at 30 m long and 200 tons weight. There are many species of sharks, ...
3
votes
3answers
808 views

What needs to be different in order for a parthenogenetically reproducing species to evolve sentience?

I am specifically interested in a form of reproductive cycle something like that of aphids on earth, where several generations of female-only parthenogenesis go by, followed by a generation being born ...
6
votes
6answers
435 views

Survival without emotion

For a (Super super super soft)Sci-fi RP I've been planning, I've been trying to design an alien race to act as a suitable antagonist. The basis of this antagonistic race is that they are far, far more ...
13
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5answers
882 views

Could a species evolve intellgence and technology without Love?

There are lots of posts speculating about a planet (or whatever) where life evolves intelligence and goes on to produce technology, under different differences lacking something or another that is ...
4
votes
1answer
800 views

How would different kinds of eyes (polycoria, differently shaped pupils, etc.) work?

These questions are a sort of follow up of my question about white pupils. I'm designing some other creatures whose defining traits involve "weird" eyes: How would a creature with oddly shaped pupils ...
6
votes
2answers
1k views

How to make the orcs meet these biological standards?

This is loosely linked to my nature Mage questions. In my fantasy world I want a race of Orcs. These are the characteristics they have to have: Stand between 6 and 7 feet tall Have crude weapons ...
2
votes
1answer
422 views

Evolution in space [duplicate]

I'm working on the following premise: outer space, or at least our solar system, is littered with creatures akin to "sea monsters". Is it possible/plausible for a creature to evolve in such a way as ...
11
votes
3answers
2k views

What evolutionary factors can contribute to large sexual dimorphism in large mammals?

On Earth, the polar bear is among the most sexually dimorphic animals, with males being on average almost twice as heavy as females (Wikipedia claims average weights of 450 kg for males versus 260 kg ...
6
votes
2answers
335 views

Alien skin substitutes

I'm trying to write hack-ish (As in, I'm a hack) science fiction that is realistic except where it is inconvenient to me. That being said, animals are not an area I want to handwave. I want the ...