81

Walking aids (or is) its blood circulation Ever sit down and when you get up your feel a bit light heated, or get pins and needles in your muscles? The cause is imperfect circulation. Once you start moving everything recovers pretty quickly. Let's crank that up. Your animal has such poor circulation that it needs to walk to circulate its blood One choice is ...


69

It's just out of superstition. Like in some traditional medicines it is believed that eating rhino's horns will provide big benefits to a man's virility or other feats along that line, for the ogres the superstition goes that by eating human flesh they can gain human intelligence, which they notoriously lack. Maybe it all started when an ogree overheard the ...


49

The ground is very hot Gotta keep on movin' - (click for sound)


39

Their breathing doesn't use lungs with its inhale/exhale bidirectional flow as most land animals, it is instead built around a one way flow system, like it happens with sharks gills. Coincidentally sharks have to continuously move to stay oxygenated. It can be more efficient because it doesn't "waste" any time with pushing out used air, but on the ...


36

The following 3 come to mind: Context Clues: The creature interprets the image and approximates the shape and dimensions of its environment based on lived experience, and knowledge regarding the objects it is viewing. Most actual depth perception (in humans at least) works this way, as parallax is only useful at relatively short range. The downside is that ...


32

Your armor is a hard fungus. https://www2.palomar.edu/users/warmstrong/bracfung.htm Go ahead and whack it with a mace. I hope that made you feel better. Try to cut it. You will need a saw, and time. This fungus produces fruiting bodies as hard as wood. You cannot kill the fungus by whaling away at the fruiting bodies, but you will get a good workout. ...


31

It is seeking something. Dolphins sleep with half of their brain at a time. https://www.scientificamerican.com/article/how-do-whales-and-dolphin/ While sleeping, the bottlenose dolphin shuts down only half of its brain, along with the opposite eye. The other half of the brain stays awake at a low level of alertness. This attentive side is used to watch for ...


29

To know what is happening at the other end of its body, This creature passes through time the same way a fence passes through a field. The fence has a start and an end and everything in between, but in reality the fence is there all at once. Similarly the creature already exists at all points in time at once. Imagine you are lying down in a field, with your ...


24

Ogres have bad teeth They only want to snack on the most tender morsels. And nothing is quite as tender as a nice, plump, accountant or baker. But even a farmer or a soldier will do, just remember to peel the soldier first before biting down, some of them have hard shells.


24

Because the plants they eat are so devoid of nutrients, or so rare, or so inefficiently digested that the animal has to constantly be grazing in order to get enough food to survive. They benefit from living where no other animals their size can and by eating a food they have no competition for. This isn't far from being real life. Many grazing herbivores ...


18

You can estimate depths using time of flight technique. There are tools which measure distances using a single photosensor: they shine a laser on an object and by measuring the time to get the signal back they calculate the distance. Your aliens can use the same approach: they emit a flash of light and by measuring the time for viewing the back reflection ...


16

The ways are MANY light vision. Just because their world is naturally dark, does not necessarily mean they are blind. They might have perfectly functional eyes, for use when they go shopping (a.k.a. interdimensional raid of Death and Destruction) Sound. As most blind creatures do, it has excellent hearing able to pinpoint direction and range and rate of ...


16

It looks like the baseline of what you are looking for is the life cycle of jellyfishes with the difference of not taking place in water. In most cases, adults release sperm and eggs into the surrounding water, where the unprotected eggs are fertilized and develop into larvae. The planula is a small larva covered with cilia. When sufficiently developed, it ...


15

Vomiting in non-undead humans is a reflex that's designed to empty the entire stomach. Basically, it happens when your body thinks you've eaten something that would be harmful to digest like poisonous berries. This means, that without "refills", your zombies could basically only projectile vomit once before they're limited to only hucking up dregs. ...


15

They bob their head slightly as they walk. You do not need two eyes to perceive depth - you can have one eye move over time with an inertial sensor like we have in our inner ear and the brain can compute depth from that. Try it yourself. Shut one eye, move your head a bit, either side to side or up and down, and notice the relative movement of objects ...


14

Symbiosis Although I thought humans had a particular high salt (and acid?) content, I can't find it anywhere. However, it might not be the nutrients, minerals and vitamins the ogre might be interested in. It might be our bacteria. Eating is an incredibly complex mechanism involving hormones, acids, but more importantly, gut flora and fauna. Most of these are ...


13

Three fingers can produce all the necessary grips the only one that really suffers is the clutch grip, (AKA ball grip, AKA sphere grip, AKA ect. grip), but it still works it is just not as good, and almost half of the other possible hand grips only use three fingers anyway. A lot of the most important tasks (like stone knapping) depend more on the wrist ...


12

So it doesn't die of the cold. There are insects in the desert that need to stay cool by constantly running. They eat running, have sex running, avoid enemies by running, etc. However they are small, and your creature is much larger which means it loses heat slower. Your mountain tiger is living in cold climates. Large predators normally rest most of the day ...


11

Ogres are degenerated humans with inability to produce critical proteins: Once, ogres were simply huge hominids with a taste for human flesh. As they became accustomed to eating fellow hominids (fellow hominids already consisting of the perfect mix of nutrients), a curious thing happened. The Ogre digestive system specialized and began taking up intact ...


10

Why would they not? Humans are plentiful, slow moving, widely distributed and for the most part not a physical danger to creatures of larger size. They're probably one of the easiest preys to take. For a top predator, there's no obvious downside. Commenters pointing out that this isn't going to work are overlooking the fact that Ogres have been extinct for ...


10

Your creature has lungs but no dedicated muscles to drive them--the muscles moving the forelimbs serve double duty. The breathing cycle is accomplished by moving the forelimbs forward and back. Your creature must have two openings for respiration, either each lung has it's own access, or the lungs are a pass-through design, one opening for inhaling and one ...


9

Displaced aggression. Why do adults beat up kids? It happens a lot. The kids are no threat. The adults who do it are getting something out of this interaction. These troubled people are expressing their aggressive impulses in a way safe to themselves. If I feel angry and I go try to beat up an adult, he might beat me back, worse. Kids can't do that. ...


8

Cholesterol Cholesterol is present in animal tissues, but really large quantities are found in the brain. If your ogres can't synthesize cholesterol in large enough quantities, they are dependent on getting them from their food, so they will develop a taste for the brain. Humans have relatively large brains compared to other animals, which makes them an ...


8

It's a by-product of robbery Ogres like robbing people of their possessions, weapons, shiny jewellery etc. They ambush and kill their victims. It would be a terrible waste to leave the bodies to rot. They celebrate by having a barbecue. Also of course human flesh just tastes good. Ogres prefer it and it's highly prized. They probably eat lots of other things ...


8

Omega-3 Fatty Acids A genetic mutation has caused your ogres to lose the ability to produce one of the enzymes needed to digest grains and nuts (either Amylase or Phytase should do). Ogres have a far more carnivorousness diet than humans as a result. The problem is that Mammals do not produce their own Omega-3 fatty acids; so, we get it from the food we ...


8

Absent magic, a full bodysuit single organism is unlikely. It's simply too far from the original creature to the end result without the needed benefit in between. However something like a composite of many small insect like creatures linking together isn't completely impossible. Imagine an original species similar to army ants, that essentially build their ...


8

Do what sea lampreys do Sea lampreys are parasites that evolved from filter feeders. They have no jaws and their bodies are technically still adapted for a filter-feeding lifestyle. So what do they do? They have a protrusible, piston-like tongue covered in keratinous teeth that they jam into the bodies of their victims. The tongue is then churned around, ...


8

Echolocation Various animals (notably bats, dolphins) are able to map a 3D mental image of the world around them by emitting sounds and hearing them echo off of nearby surfaces. While it is not true that bats are "blind" - they do have functional eyes - they are still able to navigate while flying in very low light or even no-light environments ...


8

If your alien can emit laser rays, it can measure the distance like described here or here. That's one technique machines use to measure distance with a laser. How the mechanism works: The laser is positioned on the right side* of the eye and points a little bit to the left side. If the object is near, the dot of the laser is more to the right. The farther ...


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