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Facultative parasites are an actual thing known in nature. Indeed there almost have to be in order for parasites to evolve, there has to be a transitional state between being a free-living animal and …

Except humanity 2.0 is still developing whilst the old world is already outnumbering me, any plan I initiate, they have more resources to stop it. If I drop a virus that kills all humans, some will s …

The biggest issue you are going to face is dehydration. Snails and slugs move about on a mucus trail they make with their own bodily fluids, and that takes a lot of water out of them. That's the reaso …

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 …

You need a good reason why someone would even try in the first place There really isn't much of a reason for someone to try and domesticate a baboon. People usually try to domesticate an animal when i …

Most female reptiles lack secondary sexual dimorphic features in general. It is often very difficult to sex reptiles in captivity without physically checking their cloaca, and a lot of times individua …

The answer to your question depends greatly on the context surrounding the civilization therein. On the one hand, it would be really easy for there to be detailed cultural mythos and superstitions sur …

This already exists Most fishes, specifically all ray-finned fishes and most of the non-tetrapod lobe-finned fishes like coelocanths and lungfishes, have multiple sets of nostrils. Image from n1outdo …

There's really no point. Lungs essentially perform the same role as a swim bladder (indeed, they're the same organ in fishes), and lungs originally evolved as a buoyancy organ and only secondarily bec …

The monsters are highly territorial and hate each other as much as the adventurers You say the monsters won't attack each other, but it may be that the monster lords have merely partitioned up the dun …

Nobody knows Theoretically, either two or four pairs of wings are possible. On Earth, no animal has ever evolved where all of the limbs are solely devoted to flight and are incapable of terrestrial l …

. Meet Euchambersia. It's a type of proto-mammal called a therocephalian from the late Permian of South Africa, just before the Great Dying. It's about the size of a small dog. And it's most likely v …

No, but as a consolation prize you can have it shoot lightning from its eyes. This is a stargazer (specifically Astroscopus spp.). They are a type of fish native to the Atlantic and Pacific coasts …

The best use of your genetically engineered creature would be considerably less exciting than supersoldier but entirely more practical: area denial Let's review the pros and cons of any genetically en …

An early platyrrhine primate like Perupithecus The oldest known platyrrhines date to 35-38 Ma. They are thought to have gotten to South America some time before that, potentially at the same time as t …