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Questions tagged [anatomy]

For questions about the physical structure of an organism.

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Tail/appendages [closed]

My character is an angel and has a tail that has for reasons been cut off then actually dug at with a blade to try and prevent regrowth (slow regeneration abilities to certain extents) If the tail had ...
Gabriel Stone's user avatar
3 votes
7 answers
751 views

What advantages would horns present in humans? [closed]

In my canon, an advanced civilization exists that has a pre-established penchant for extensive bodily modification. While their extra thumb and tail are indeed useful for additional dexterity and ...
FrossD's user avatar
  • 259
2 votes
2 answers
121 views

What is the optimal number of fins for maximum maneuverability of an aquatic organism?

I am deciding how many fins to give a race of aquatic "humanoids" for maximum maneuverability in the water. It is a given that they would have tail and pectoral fins because they have very ...
user1181399's user avatar
3 votes
4 answers
173 views

How would geometric leaves and flower petals evolve?

How would a plant grow leaves and flowers that are square and/or geometrically shaped? Outside of being restricted by external forces like growing in a tight space, how could my plant species grow ...
Aster's user avatar
  • 341
6 votes
4 answers
575 views

How would quadrupedal tetrapods use complex tools and become more technologically advanced?

Would quadrupedal tetrapod species be able to utilise complex tools to develop further technologically? (Complex tools meaning purposefully constructed and shaped to perform a task, for example humans ...
Aster's user avatar
  • 341
5 votes
5 answers
2k views

Is a four-armed humanoid body-plan as realistic as a centaur-like body-plan?

Many designs for sapient aliens and sapient fantasy races alike - including one of my own - resemble four-armed humanoids; As covered in other questions on this site, a six-limbed vertebrate-analog is ...
Choroflorocarbon's user avatar
5 votes
9 answers
2k views

Aliens with an extra-set of ears- any possible benefits?

While doing some concept drawings of an alien species for a project of mine I somehow wound up drawing a head with two sets of ears, one pair on the top of the head and the other lower with one on ...
king of panes's user avatar
1 vote
3 answers
193 views

What injuries can leave permanent damage while allowing someone to move freely/fight?

I want to have a character who used to be the captain of/personal guard for a queen but has to retire due to an injury but I can't find any injury that would leave permenant damage without leaving ...
sempiterne's user avatar
7 votes
7 answers
2k views

Would a saber-toothed predator make a good draught animal?

Saber-toothed predators are strong and robust, with a strengthened neck which they use to power killing strikes on their prey. To me, this profile resembles such as oxen, horses, and other such ...
Ichthys King's user avatar
  • 16.2k
4 votes
2 answers
193 views

Are there any benefits to keeping a tail while bipedal?

I'm making a species of completely bipedal monkeys* (Not apes), and is there any evolutionary reason for them to keep their prehensile tails instead of being rid of them? *The monkeys are much smaller ...
FelisMiscellaneous's user avatar
6 votes
1 answer
300 views

Emotive Plate Eyes

Drawings included to better illustrate what‘s going on here. Also because I’m utterly addicted to doodling lately. I recently learned about the Grideye Fish, and it inspired a design for a sci-if ...
Other Worlds's user avatar
1 vote
2 answers
205 views

What can make a person who was not born mute go mute over a single night? [closed]

My character is a person who was not born mute. He could talk until the age of 26 until something happens and he loses his ability to talk itself. Can anything like an accident cause permanent ...
Rui's user avatar
  • 51
-4 votes
2 answers
224 views

Can a clone be of the same age as the original [closed]

If I clone a 50 year old what are the ways I can get a 50 year old clone ?
sutirtha soor's user avatar
3 votes
2 answers
130 views

Melusine/Two-tailed Merfolk’s Dual Mobility, Land and Sea

Most people know about the famous Starbuck’s mermaid and her bizarre two tails. Starbuck's Logo However, few know that her origins actually harken back to very old depictions of mermaids that can be ...
Thunderhammer's user avatar
1 vote
1 answer
137 views

How large and tall can a bipedal, upright standing, mostly herbivorous therapod get? [duplicate]

I was originally gonna post this as one question with my previous one, but since these are two different topics I've decided to split them. Previous question: What is the best Foot shape for a Bidepal ...
TheGoldenBoy2188 The Coolest G's user avatar
5 votes
2 answers
432 views

What is the best Foot shape for a Bidepal uprighting standing dinosaur?

I'm working on a idea for a Gojirasaurus/Godzillasaurus species of dinosaur (a fictional dinosaur that was the dinosaur that would eventually become Godzilla due to the effects of radiation.) The ...
TheGoldenBoy2188 The Coolest G's user avatar
4 votes
5 answers
1k views

Is this a realistic evolution for a flatworm-like species?

I have made two simple diagrams, each detailing the difference between two of my genuses (yes this is on purpose); Kuroribranch and Ennapoda. Kuroribranch is extremely similar to an Earth flatworm. ...
AxobitMelodies's user avatar
2 votes
3 answers
266 views

Question about speculative human biology

What kind of evolutions would humanity have to undergo to be able to live comfortably on the moon or any other sufficently low-mass body? As I am aware that it can be bad for bones and the ...
DanceroftheStars's user avatar
3 votes
3 answers
242 views

Dragon's body proportion: eye size to body length [closed]

A classic dragon shape, eg Smaug, approximately 6 km length from nose to tail with similar wingspan. Ignore square cube rule due to magic and also neglect gravity as its native habitat is space. Eyes ...
mynci's user avatar
  • 47
3 votes
2 answers
1k views

How would a naga swim underwater? [closed]

Naga is a mix of a human torso and the lower body of a serpent. With this combination, how would they move when they swim?
ariel ivory's user avatar
8 votes
6 answers
2k views

Where should an electric organ go in a human

In my story with magic based around the manipulation of electromagnetism, I need the characters to have a hand-wave electric organ. This electric organ is about 10 cm per organ with the capacity to ...
I like lightning 's user avatar
0 votes
2 answers
123 views

How could my organism lose most of its water?

I'm writing a short hard-science story about an organism that loses most of its water much like tardigrades before entering dormancy but this organism is the size of a cat, how could I explain this ...
Z Z's user avatar
  • 65
3 votes
5 answers
344 views

How would a creatures brain anatomy evolve to avoid brain damage?

I’m trying to create a horned creature that uses its head to head-butt much like a ram, but I’m curious about what kind of evolutionary trait would need to come about to greatly reduce the chance for ...
Bija's user avatar
  • 51
1 vote
4 answers
178 views

How would a species without optical vision navigate a spaceship? [duplicate]

I wanted to create an alien species with an interstellar civilization, but the twist is that they never developed eyes, due to evolving on a planet far enough away from its star that it’s shrouded in ...
Daikyu Maryu's user avatar
  • 1,173
5 votes
6 answers
1k views

Eyes that aren’t spheres: possibilities? [duplicate]

I have a sci-fi-like universe and one of the species has long, vertical eyes. But would this be anatomically possible without a sphere-like structure? I know that compound eyes are a thing, but how &...
apsistema's user avatar
3 votes
6 answers
675 views

Is there a maximum number of fingers a species can have in each hand? [closed]

We have 5 fingers in each hand (10 fingers in both hands). So we count in a base of 10 (decimal base) which has the accepted digits of 0 to 9. Higher bases have more accepted digits; for example ...
Snack Exchange's user avatar
0 votes
1 answer
181 views

Does this Non-Hausdorff winged quadruped anatomy actually work? [closed]

The design features two non-contacting 'branches', one for the wings and another for the forelegs The ribcage is roughly avian, and exists on both branches. Attached are a pair of feline-type forelegs ...
Ichthys King's user avatar
  • 16.2k
53 votes
5 answers
10k views

How horny can humans get before it's too horny

Trying to create horns which are both ornamental and defensive, I've read somewhere that beards evolved in humans because we punch each other so much that even just a minuscule amount of hair cushion ...
user avatar
12 votes
7 answers
2k views

What would a potion that increases resistance to damage actually do to the body?

Alright, we are in a medieval fantasy setting. In this setting, northern warriors (basically vikings or typical fantasy barbarians) have berserkers that use certain potions that make themselves ...
Chuck's user avatar
  • 1,389
3 votes
3 answers
867 views

Harness for soft-bodied animal

There is a soft-bodied animal approximately 1m in length. It has a worm-like body with a hydrostatic skeleton, and several pairs of legs that function as muscular hydrostats. Its anatomy has a rather ...
Ichthys King's user avatar
  • 16.2k
3 votes
2 answers
257 views

Biped species with trunk evolved to use for locomotion

So currently in my speculative evolution scenario, I have a creature with an elongated trunk that it uses for rock climbing. This species transitions to a savannah like lifestyle and I was wondering ...
Storme Clouds's user avatar
-1 votes
1 answer
147 views

Are mouthparts best placed on the head or the mouth? [closed]

Let there be a creature with mammalian dentition, with three types of teeth among its jaws. Its mouth, however, is in its stomach. Should this creature have its jaws on its head, or on its mouth? Or ...
Ichthys King's user avatar
  • 16.2k
8 votes
1 answer
286 views

What would a lizardly phonetic alphabet be?

The international phonetic alphabet system contains all sounds that a human can make. However, humans are not lizards, but mammals, and hence have many features that let us make more complex sounds ...
Ichthys King's user avatar
  • 16.2k
12 votes
12 answers
7k views

How would "barbie doll" anatomy work?

A fairly common trope in fantasy is "barbie doll anatomy". Effectively, a species completely lacks any visible orifices besides their mouth and nose. This brings up two major questions. ...
Robert Spencer's user avatar
0 votes
2 answers
124 views

Which limbs should be retained or lost to turn this land animal into a swimmer? [closed]

The form of large swimming animals is fairly consistent across distantly related groups. As example, all aquatic mammals, save the quadrupedal semiaquatic forms, have adapted for a fish-like shape ...
Ichthys King's user avatar
  • 16.2k
8 votes
7 answers
3k views

Why won't Venusians just explode in our own atmosphere when they're not even wearing protective suits?

So "Venusians" are these Star Trek-y humanoid aliens that evolved on a planet with more than 75 times Earth's atmosphere. In a lot of ways this makes them not too dissimilar from deep sea ...
LiveInAmbeR's user avatar
  • 10.6k
2 votes
1 answer
111 views

Coherence of Facial Features in an Antarctic Race

I am currently thinking of an Asian-descended race/type of humans who want from the Americas then were expulsed to an agriculturally viable Antarctica by what we know today as the Native Americans, I ...
Bangerblade's user avatar
1 vote
2 answers
202 views

How would the biological ability to generate electricity to fight work in terrestrial animals? [closed]

In a series I'm writing, there are seven categories of species of intelligent, human-like creatures with magical abilities that vary by species. One of them is a revamp of mermaids, or as I call them, ...
Nightmare's user avatar
  • 163
4 votes
3 answers
642 views

What thickness of human flesh would have the same protective value as 100mm of RHA?

I'm trying to judge how much damage modern anti-tank weapons would deal to giants and I'm looking for a rough, order of magnitude estimate on how much protection layers of flesh would provide.
Adam Kabbeke's user avatar
  • 1,973
9 votes
2 answers
2k views

Are humanoid hind legs compatible with reptilian tails?

Unlike mammals, reptiles lack gluteal muscles and instead have enlarged caudofemoralis muscles to extend the hindlegs. The humanoid legs, on the other hand, rely on the mammalian gluteals in order to ...
Ichthys King's user avatar
  • 16.2k
2 votes
4 answers
224 views

Can a canine/human hybrid balance without a tail?

I am writing a book about a humanoid wolf (named Wolf. See what I did there?). Wolf lost most of his tail in an accident when he was younger. He hides the stump under his jacket to avoid being ...
Deko Revinio's user avatar
5 votes
2 answers
404 views

Could clawed fingers (without fingertips) work as well as nailed fingers?

The hand and arm are exactly human from the shoulder to the intermediate phalanges. The distal phalanges are conical, as in clawed animals, and is entirely surrounded by a keratinous claw. There is no ...
Ichthys King's user avatar
  • 16.2k
4 votes
1 answer
95 views

Could a paleopteran without a complete exoskeleton fly?

Unlike most insects, paleopterans have wing muscles that connect directly with the wing. Could this musculature be used to let a soft, maggot-like insect fly? The insect is relatively large (around ...
Ichthys King's user avatar
  • 16.2k
0 votes
1 answer
100 views

What would have to be considered when designing a humanoid species with extra limbs? [closed]

My dad was talking about some book where these humans had one big arm and two smaller arms, and it got me thinking. What if humans had two extra arms? And not big ones like the Ben 10 alien, but ...
C J's user avatar
  • 65
13 votes
6 answers
1k views

Dragon people with colorful horns

Dragonfolk have skin that looks like rock, but sometimes, some of them turn colorful with very bright horns for the same reason salmon turn from grey to red, while others are always bright and colored....
user avatar
-1 votes
1 answer
138 views

Are there anatomically good proportions for different dragon-like creatures? [duplicate]

I am unsure of what I can add here to make my question more well defined as my question is intended to be general. Answers can vary based on type of dragon-types (Asian vs European) or even (as the ...
Graham Lewis's user avatar
2 votes
1 answer
247 views

How to calculate the strength of fictional creatures when creating them or at least be precise and believable?

Strength sports and world records seem to not be relieable measurments for upper limits of humanoid strength since in most sports what was back then a world record level amount of strength and ...
user avatar
5 votes
2 answers
133 views

Two sets of fins, two different functions?

Let's say you had a fish analogy organism in the oceans of an alien world. Assuming it's ancestry allows for more the number of limbs, would it be possible for it to have one set of fins for swimming ...
Joe Smith's user avatar
  • 3,192
1 vote
6 answers
698 views

Does prey necessarily have to be bigger than predator when it comes to larger animals?

I am trying to create various fictional animals and monsters to inhabit my world. Many of the animals I am creating are huge, and some are even bigger than elephants. Some of these include the ...
Crafter's user avatar
  • 2,591
5 votes
3 answers
283 views

Anatomic design of a 10m tall humanoid that procreates by "splitting"

I'm currently trying to work out how a newly discovered species would work anatomically. It is extremely tall (10 to 15 meters) and has humanoid shape (head with eyes, arms, legs), but it is not a ...
babie389's user avatar

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