Third, they are very easy to selectively breed and mass produce. They were easy to find and acquire, and despite their danger, could easily be captured. Isaac Kleiner, actually possessed one name “Lamarr”, putting the idea in many people’s heads that they could be tamed and kept. It is theorized that this is because a number of factors- first is that the one of the leading rebellion leaders, Dr. Headcrabs, despite their use as a weapon by the Combine, were one of the first alien species to actually be domesticated. Some birds, a few select felines, insects, and alien species were nearly all they had to work with. When the Combine forces were driven off and humans were once again allowed to practice the art of domestication, they were left with very few options. Wolves, cats, and even less common creatures such as foxes, snakes, and spiders were kept and tamed and bred for companionship and work despite their danger. Humans, however, are a very social species, and are naturals at befriending things that are arguably dangerous. All livestock species and most pet species were completely eliminated, leaving humans with few, if no animal companions. Because of the Combine influence, any animal that was reliant on human care was almost immediately wiped out, both purposefully and inadvertently as humans were no longer available to care for them. The most notable toll was on human-domesticated animals. Nearly 75% of land animals and over 68% of marine animals went extinct in this time frame. Animals took a lot of hits as well, and in the remaining 20 years before liberation, the resulting environmental tolls as well as continued extermination caused this sixth mass extinction- arguably just as bad or worse than the meteorite that killed the dinosaurs. However, not all of these casualties were humans. In the wake of the 7 hour war and the proceeding Combine invasion, there was a large amount of casualties. If you would like to see more things based on these headcanons, ocs, or simply more things or art I’ve done on this subject, check out my #headcrabguide tag on my blog! HISTORY
If you want to use any of this information for your own headcanons, OCs, or fanart, you are 100% welcome to use it, though I would like to be credited! A lot of these things are just speculative or made up for fun! Note: All of this is written purely for fun by an aspiring zoologist who simply loves genetics and speculative biology! This is only mildly inspired by source material, and isn’t completely indicative of canon. YOUR BEGINNER’S GUIDE TO CLASSIC HEADCRAB DOMESTICATIONĬlick below to start reading this comprehensive document!
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