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45

There are trees which are capable of killing large animals, in fact, only they don't eat them afterwards. But it's a start. Pisonia brunoniana is known as the birdcatcher tree for a reason. The seed pods of this tree are coated with a mucus which traps insects - even this alone could evolve into carnivory, but wait till you hear what happens next. These ...


31

Rule 1: Don't feed like a tiger, feed like an alligator. Alligators (and several other animals) eat only rarely: they can sustain themselves on just a single large prey animal every year, or even every two years, because they move slowly and don't use up much energy. Trees are great at moving slowly and conserving energy! That means that your particular ...


18

Carcass tree. The tree has a commensal relationship with large predators. The predators use the tree as a refuge to eat their kills safely. The tree gets the leftovers. The tree has hollows in which scraps and offal land, and from there the tree puts forth adventitious roots. The tree exudes pyrethrins, poisoning the meat for flies and so the tree gets ...


17

A tale of envy. Hippos. The Ishisonga remembers swimming as a cub: it loved swimming, it would dive beneath the water and feed on the lush and delicious water-weed, reveling in the cool splashy games with the hippo children; swimming was what it dreamt about, what made life worthwhile. Then time passed: it grew, its head heavy with horn, it became more ...


14

Mammals (males as well as females) have what are called "mammary lines": This is a bilateral structure that rules where mammary tissue can develop. Apes (among whom humans) generally have two and those towards the cephalic end of the line. Some people have three or four. Many quadrupeds have breast tissue at the caudal end of the lines --- a cow's udder ...


14

I'd suggest pitcher plant style, the stem is hollow and full of sweet nectar that attracts small creatures. There are arguments about whether pitcher plants are strictly carnivorous as some suggest other options, but for the purposes of this question, we'll assume they are carnivorous. Since the requirement to not move on its own accord prohibits various ...


12

A reasonable name would be "gastroderm". Gastro meaning stomach and dermis meaning skin. A similar class of creatures on earth is the gastropod which literally means stomach foot. This class of animals includes the common snail.


11

It's a sexual selection character, more or less like a male peacock tail, which from a strictly practical point of view is a pain in the back for a bird who has to move in a dense forest environment. If the male can manage to survive with clipped wings and tail, it means he is really fit and thus a good mate. If he doesn't manage to survive, well.. corpses ...


10

Imagine that the Ichisonga was a real creature, a species of rhinoceros inhabiting Africa. Rhinos already behave like this and they are herbivores. They'll attack most things. Of course they lose against elephants but that doesn't stop them trying. Why? Nobody knows! Rhino versus elephant. https://youtu.be/4sRlnNllql0?t=155 Rhino against just ...


10

Coevolution. There was this little inedible snake (let's say a sidewinder, because those are heat seeking species) that snuck up on and entangled birds' wings in the night to exhaust them and finally eat them. The B-Bird was too big for this tactic, so it took the snakes aloft, loosing them after a struggle. This was actually a bonus for the snakes as they ...


9

It could be that ichisongas shared their territories with hippos and elephants for thousands of years and probably due to increasing competition, these ichisongas must have developed a territorial instinct. Probably these ichisongas waited around till the elephants and hippos rotted away to make sure that they were dead and that they won't be back to bother ...


9

You could call it a saprotroph. https://en.wikipedia.org/wiki/Saprotrophic_nutrition As matter decomposes within a medium in which a saprotroph is residing, the saprotroph breaks such matter down into its composites. Proteins are broken down into their amino acid composites through the breaking of peptide bonds by proteases. Lipids are broken down ...


9

These are hermaphrodites, and what you are calling males are actually gametes. Your "males" are haploid (like gametes), and are nonsentient (like gametes). They are produced in excess (like gametes) and their sole function is to mediate sexual reproduction (like gametes). Your "females" can make these male gametes and also receive them, presumably to ...


9

Breath that causes disease Though the source says "venomous," you do not specify the "disease." What about breath that causes vomiting? If it smells like human vomit that does cause a lot of people to throw up in real life. It could also have elements of disgustingness that would lead to even more people heading for the buckets. If you'd like a more ...


9

One source of the strong reaction with alkali and alkali-earth metals could be a high level of weakly bound oxidizers in the Fair Folk flesh. Oxygen is common in our environment, and presumably in theirs as well, if they can breathe our air; chlorine is also fairly common, though not as an atmospheric gas. If their bodies contain any level of fluorine ...


8

Venus Flytrap https://en.m.wikipedia.org/wiki/Venus_flytrap Perhaps the most obvious starting place, the venus flytrap is a plant with “jaws” that slam shut like a bear trap when the hairs on the inside are moved. Typically it requires several movements within a certain time frame in order to trigger the jaws to shut (so the plant knows that the thing ...


8

Your birds have a double wing, based on expansion of the alula. https://academy.allaboutbirds.org/american-kestrel-flying-landing-alula-tci-9nov15-kevinjmcgowan_0717-186_ac_1000x562px/ https://en.wikipedia.org/wiki/Alula The alula /ˈæljʊlə/, or bastard wing, (plural alulae) is a small projection on the anterior edge of the wing of modern birds and a ...


8

You presumably want large leaves because they might shade better, but you can shade just as well with a denser canopy of smaller leaves. You presumably want really thin spindly trees to maximise the amount of sunlight that can reach the ground in winter, but that present a bit of a structural issue. For a start, what would happen in strong winds? Nothing ...


7

Real world Komodo Dragons carry disease in their saliva, so that part already has a real world precedence. Carnivorous mouths are not the cleanest places in the world, so disease carrying may be the rule rather than the exception. Aversion to the naked male form also has some precedence. Many heterosexual male humans exhibit homophobia which mimics that ...


6

Sure, it's called convergent evolution. analogous traits arise when different species live in similar ways and/or a similar environment, and so face the same environmental factors Natural selection expressed through (first) survival, and then reproductive success, ensures the continuation in the species of those traits which enable the organism to ...


6

Like Liam Morris, I have always liked the idea of willow trees that trap prey. My mechanism of choice would be that the hanging leaves and branches are covered in a stringy sap that works like a spider's web to trap small animals. The more the animal struggles the more enmeshed they become and the tree then grows tendrils into the trapped prey to extract ...


6

At least in non segmented animals like vertebrates, duplication of limbs is more or less out of the question. First of all, a single chance mutation has to create a pair of limbs which just happen to not be in such a place as to interfere with any other organs or anatomical structures. Then, that mutation has to be somehow so advantageous that it takes over ...


6

I think Explosive Liquefaction, and not Fluidization, is the effect you are looking for. Soil Liquefaction or Explosive Liquefaction can occur when an intense pressure wave travels through the ground. It has been extensively studied by mining engineering and weapons designers. Generally, mining engineers want to avoid it, while weapons designers want to ...


6

Alkaline and alkalis are really reactive metals. (I assume you mean alkali when you say 'alkaloid', because alkaloids are an organic molecule classification. Alkaloids include morphine.) I mean, there's really no point in overthinking this. Alkaline & alkaloids, due to their valence shell structures are pretty much dying to react with just about ...


5

Can a plant survive a 3 month period of no luminosity (or at least in amount that does not provide enough light to sustain any photosynthesis)? Yes, it's called WINTER, in case of polar night the tolerated period without light can be even longer. Being bioluminesent would be quite expensive from evolutionary perspective. There would be an evolutionary ...


5

Everybody knows how amazing the collective intelligence of the termites is! While some of them like to carve their nests inside the wood, a particular race of termites has become particularly adapted to life inside dead pieces of wood. This particular subfamily, the Coptotermes Pinocchii has adapted so well that it can move the log of wood, for defence or ...


5

This is basically what the brain already does, but ramped up to 11 and in control of the conscious mind. The problem is that this requires a very specific mind. During development your brain makes millions of connections with other parts of the brains, then at some point it starts to purposefully remove many of these, leaving the most used neural pathways ...


4

Now that you mention it, there might be an issue with that. If they were of any decent height relative to the babies, then they'd have to carry them to suckle. With mammaries in the abdomen like most mammals, the mothers would have to be cradling the babies right against their lady parts, which is hardly a good idea - mainly, either could get an infection ...


4

Lose or at least heavily reduce the shell, it would probably weight too much for an animal of that size and it wouldn't be needed for defense anyway, barring some truly fearsome predators. I see you already made the legs more pillar-like, so no need to change anything there. Sauropods in real life used a complex system of internal air pockets to reduce their ...


4

A few suggestions: Dermophage Dermostome Stomatoderm Dermis = skin, phage = eat, and stomata = mouth. So that would roughly translate to "skin eater", "skin mouth" and "mouth of skin". I don't think gastroderm would be entirely appropriate since the skin is only used for ingestion of food, not necessarily the dissolving of it. Mind you, it eats a lot of ...


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