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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4answers
147 views

How to make a viable aquatic mount

Just as in the real world where horses were tamed to travel long distances quickly across land, would it be realistic for an animal to be tamed and used as an aquatic mount for quick transport around ...
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2answers
114 views

Could a species evolve a defensive ability to excrete a super acid?

I am working on creating a sapient reptilian species from a mineral-rich Planet that has very little flora. I was wanting this species to use a super acid (specifically fluoroantimonic acid) excreted ...
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2answers
226 views

Could Cerberus be a pack animal?

So I've created a Cerberus creature that is a group of three hyena-like dogs instead of one organism. The three individuals are linked together, much like an ant colony or bee hive. They would be ...
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3answers
308 views

Will my bird likely be able to fly in this atmosphere on this planet?

I'm working on a species of large bird, and trying to determine whether they will be able to fly or not. I know that this equation likely applies: $$ A = \cfrac{L}{\cfrac{1}{2} v^2 \rho C_L} $$ ...
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2answers
481 views

How would digestion work for an alien species with a diet of minerals?

If an alien species ate minerals (aka a lithovore species), how might their bodies differ from ours? How would they eat/digest the materials? Do those answsers change if they eat substances like ...
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6answers
474 views

Plausibility of a creature made of planets and stars?

I imagine such a creature would be composed of thousands, possibly millions of planets, gas clouds, asteroids and stars. Almost like a giant living engine powered entirely by gravity. Obviously the ...
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4answers
1k views

How could a creature like this evolve?

In the question; Hollow-boned Humanoids Nathaniels humanoids were a flying mammal species called soarfolk. But let's say that I want a sapient mammal to have hollow bones but not fly. These furred, ...
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3answers
316 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?
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1answer
118 views

Anatomically Correct Loch Ness Monster [closed]

This is a submission for the Anatomically Correct Series The Loch Ness Monster is commonly depicted as: living in lakes/oceans having a long swan like neck sometimes peaks it's head out of the ...
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2answers
105 views

Genetic engineering for sea people (false merfolk)

What adaptations are needed for human-derived sea-dwellers? My people are not the classic half-fish, nor are they whale-tail-people - they wear ankle-length swimming skirts that bind their legs into ...
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2answers
219 views

Would advanced Plantoids be plausible? [closed]

Could it be plausible that if enough time given and favorable conditions are met, the dominant species of an alien planet could be a species of plant and by dominant I mean achieving sentience and ...
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3answers
191 views

Alien Senses: Active electrolocation

In the course of designing fictional species I often find myself wishing to use exotic senses which we humans lack. This poses a unique and interesting challenge as without possessing the sense myself ...
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4answers
424 views

Would Combined eyes be possible?

Imagine a animal with eyes that are a combination of arthropod compound eye with vertebrate eye,I visualize this like a eye with the sclera covered in a layer of compound eyes,or compound eyes with ...
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1answer
117 views

Gasses as a biological solvent

Everyone knows that water is necessary for life because it is such a good solvent, but could a lifeform use water vapor as a solvent instead of water, or any other gas that works a solvent instead of ...
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4answers
184 views

Megatherium tool making

I have seen many questions and answers throughout this site, and as far I have understood, thumbs are not needed to use tools. Seems like many structures and objects can be used properly with any kind ...
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3answers
140 views

Rapid tanning in humans as a reaction to radiation

Is it reasonably possible for a type of human to exist that rapidly tans in the presence of large amounts of sun/radiation and loses it again afterwards, in a matter of minutes? Also, how might such a ...
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3answers
349 views

Could a self-aware bacterial supercomputer start its own ecosystem?

I know A LOT of this gonna be a stretch and that I'm probably misunderstanding or exaggerating current real-life trends in science, but that's kind of why I'm asking the question. We know it's ...
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3answers
259 views

what type of head anatomy would simians evolve

The end goal is to have human like beings with vestigial horns or antlers, but I am unsure of what types of horns they should be. Apparently there are three type of horn: living horn-bony ...
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2answers
364 views

What would happen and stop me from using smaller beings?

A problem I've run into is the use of ultra massive beings due to the effects of the square-cube law which means that I cannot within the current laws of physics have the world I envision. My world ...
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2answers
485 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?
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2answers
348 views

Ultimate Chimera [closed]

Questions See Mew, a legendary pokemon from Pokemon universe, it is claimed to contains the DNA of all pokemon ever lived. Is it possible there can be a lifeform on Earth that can also claim similar ...
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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?
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2answers
161 views

A flying animal that would experience little to no drag?

I wanted to design a huge alien organism that resembles something like a jet. It lives on a low gravity planet that has 60% earth’s gravity and a similar atmosphere to earth. It would fly by ...
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2answers
123 views

is it possible for quadrupedal or hexapodal flying monster to fly well while their limbs retracted?

just suddenly struck by curiosity, i vaguely remember that big quadrupedal or hexapodal (if you count the wings) animals cant fly well basically. I dont remember why, but i think it was related to ...
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2answers
225 views

What can I expect these humanoids to look like?

I am designing a race of human-based creatures for my story. This race has developed as regular humans until roughly 500BC until an event forced them to start living underground for several centuries. ...
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2answers
109 views

Could my species exist naturally

The species I have created, are a species of gliding reptiles. They look primarily like horned lizards and measure up to 20 feet long, 7 feet wide, and 5-6 feet tall. however, they posses wings that ...
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5answers
182 views

How can a creature caught between realms feed on mortal prey?

This is a follow-up question to this: How could an abortion cause infertility in a witch? When the witch connected to a botchling dies, the creature loses its thether and becomes unbound to the ...
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2answers
126 views

How much energy could be stored in an average human body using electric organs?

I have been playing with the ideas of electricity generating/attacks for my characters using either electric organs similar to electric eels or some sort of bio battery using bacteria that produce ...
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3answers
284 views

What weapons would nanomachines use? [closed]

So, the strongest of my current characters is a happy little cloud, that's composed of nanomachines (well, not exactly nano, it's well in the micro prefix, but individual parts obviously require ...
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2answers
290 views

How can I make summoning a familiar worth the effort? [closed]

This mageocracy is controlled by mages, who exist in all walks of society. Magic is practiced on the open, and there is an entire education system built around its study (elementary schools, colleges, ...
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5answers
193 views

Dragon breathing gas-based flame (fireballs?)

So, I have a design for a medium (minivan-van-small truck-sized) dragon whose fire expands quickly, and easily fills confined spaces. How, realistically, could that work, and what would it plausibly ...
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2answers
425 views

How to explain fire-breathing feathery dragon extreme mating behavior?

I'm going to borrow many ideas from birds to keep my dragon airborne, porous bones and feathers to keep it light while spewing balls of flame to create warm air currents at high altitudes. The problem ...
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4answers
381 views

Possibility of a world inhabited by giant creatures and plants [duplicate]

Is it possible for such creatures/plants and planet to exist without magic? Assuming the creatures are sapient genetically engineered 30-40 meter tall species of various form: humanoids, snakes, ...
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1answer
419 views

How big could an organism that lives its entire life in outer space get before collapsing from its own gravity?

I was thinking of an organism that lives its entire life in outer space. It would be shaped like a rocket and have skin to pressurize its insides so that its internal organs are pressurized even when ...
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2answers
260 views

How can a jet-propelled horse work?

I was reading more Laundry stories and just went through Equoid. The humorous "Procurement Specification" got me thinking. In a rational SF approach (as opposed to magic), imagine a civilization ...
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1answer
109 views

The chosen one is destined to defeat the devil [closed]

Legend says the chosen one will be able to defeat the devil without fighting it. Over the years many brave adventurers have tried and miserably failed taking down the devil with various plans and ...
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1answer
119 views

A good discerning visual feature for female lizardfolk

So, when it comes to humanoid races, this has been a problem for me for quite some time. Sure, mammals (werewolves, gnolls, minotaurs, centaurs) are a no-brainer. I even decided to give tengu ...
3
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1answer
127 views

Creature that increases its own lifespan by killing other animals

An intelligent creature who's natural life span is around 50 years in which they need to feed to not die of starvation after which they naturally die. But killing other beings of their own species ...
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1answer
151 views

Anatomical Feasibility of a Humanoid Derived from Orangutans?

Of the living great apes, humans are most closely related to the chimpanzees and bonobos. We retain quite a few features from that side of the simian family, and it got me thinking about what a ...
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4answers
224 views

Would a large gliding predator be viable?

Most animals that glide are rather light and small. Flying squirrels, Colugos, and sugar gliders all weigh but a few ounces. The largest gliding predators are snakes of the Chrysopelea genus. Again, ...
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3answers
186 views

Shared Consciousnesses - Part 1: Genesis

EDIT: As suggested by L.Dutch, I turned the original post into a series of its own. Some Context Though the name "Shared Consciousness" is pretty self explanatory to me, the best I can do to ...
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3answers
198 views

Efficiency of Food Absorption

I have this alien race, lets call them Amorphs, to imagine just think of an amoeba mixed with a spook fish. They are surrounded by thick, clear, blue membrane with the internal organs showing, and the ...
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2answers
400 views

4D Digestive System Structure

Note: I'm talking about a fourth spatial dimension. As far as I can tell, a 2 dimensional creature has one possible digestive system structure; have a cavity inside its body connected to the outside ...
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2answers
619 views

How could a creature/species evolve erogenous zones in areas not usually sex-related?

For example, a half-cat half-human hybrid might have a zone partway down their tail, or a human might have one in an unusual place e.g. their scalp, shoulders, whatever. I've seen this used in ...
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3answers
198 views

Parasitic plant concept/other parasite

I believe there are precious few questions relating to the concept in general, but I was wondering if the concept of an organism absorbing large amounts of CO2 from blood seemed reasonably plausible? ...
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2answers
408 views

How small can a sentient humanoid get [duplicate]

How small can a humanoid creature get and still retain human-level intelligence? Specifically, what would be the smallest brain possible capable of advanced reasoning and what brain-body mass ratio ...
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4answers
198 views

How does biochemistry relate to nutrients needed for life?

Many questions describe hypothetical biochemistries, or alternatives to carbon, water, DNA, etc that aliens could use. They cite specific examples, given a world we know about, of what creatures would ...
3
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1answer
159 views

Can reptiles with legs shed their skin all at once?

I know snakes have an easier time and legs make things difficult. Would this be impractical for riding lizards in a fantasy setting? Could one breed for a trait of a faster shedding process?
3
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1answer
132 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 ...
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3answers
62 views

Properties of a distributed spell altering the appearance of creatures

In my story, a man lived under the influence of an evil sorcerer. In this world, magic takes energy to cast, and the energy required increases over distance, the sorcerer casted a spell focused around ...

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