Requested by: @irchocolate
Just like my last set of headcanons this has no base in canon really and just stuff that my brain creates thank you
* Andorian blood is also copper based, (I didn’t mention this in my last head canon post and I’ll probably add it to my add list but I think for Vulcans their blood has some other compound in it to make it green).
*Andorians are insectoids!
* Because Andorians live in caverns underground, the air can be a little thin at times.
* Andorians have a really high metabolism.
* Andorians are like radiators, they’re really warm! Perfect to snuggle with in the winter.
* Andorians also like to sleep in groups, it’s actually both cultural and instinctual. Because it’s so cold on Andor/Andoria sleeping together keeps anyone from freezing to death in their sleep, especially the children.
* Because Andoria/Andor is so cold Andorians have a mostly meat based diets, they have some plants that grow and they eat, but too much fiber is bad for Andorian stomachs.
* Andorians marry in groups of four or more, and the groups and consist of any combination of genders. Some Andorians marry in twos, but is rare and unusual. However, Aenar do only marry in twos.
* Because they all sleep in groups together Andorians have almost no concept of personal space. They love to be near each other. The only intimate touching is touching that is meant to be intimate and antenna touches.
* Andorians give lovers and offspring antenna kisses! Two Andorians stand close together and gently tap antenna together. It’s similar to kissing or hugs and is a display of affection.
* Andorians who aren’t well trained are horrible at hiding their true feelings, the antenna give it away! It’s a part of their body language.
* Andorian ale has a really high alcohol content, it can reach up to 80-90%. They can drink a lot of it safely because of their high metabolism.
* Shran most definitely watered down the ale he’d given Archer, no need to accidentally kill his new pink friend!
* Speaking of pink, Andorians have a very different way of seeing. They can see hundreds of more colors than humans can. Seeing more colored helped Andorians find more food in a planet that is covered in mostly white.
* They may be able to see more colors but unfortunately Andorians don’t have good eyesight. Living in caverns underground you really don’t need to see too far anyways. Their eyesight ranges at 20 / 30-20 / 70 based on a human snellen chart. (Better then my eyesight though >.>)
* Andorians keep pets too! There’s a giant beetle like creature (about half a foot to a foot long) Andorians love! They love their pets as close as family, so Archer’s love for his Beagle wouldn’t be too foreign to an Andorian.
* Andorians usually have between 1-4 children during one pregnancy. It’s more common to have 2-3 though.
* Unfortunately, during the end of the 22nd century and until the mid-23rd century a virus went around causing difficulty in pregnancy. This caused a steep decline in their population.
* Andorian bones are damn near impossible to break. They’ll sustain impact related internal bleeding well before breaking any bones.
* Andorians are really good with the cold and the heat, but obviously they prefer to be nice and cool
* Andorians are incredibly selfless, and loyal. More so to their own people than others, but if you gain an Andorian as a friend, I can guarantee you’ll have a loyal lifelong friend.
* When Andorians want to join the military they pair up and go to the surface for survival training. The surface is cold and harsh. A mild snow storm can blind anyone, only being able to see an arms length away. To pass training both Andorians must come back in an Andorian week alive. It’s a difficult test however Andorians are very motivated and with team work most are able to pass.
(This last headcanon is really iffy and I’m not sure if I like it or dislike it, the idea is interesting but I’m teetering) 
* Ever wondered where Andorian silk comes from? The Andorians of course! Female Andorians can produce the silk from a gland inside their throats. This adaptation evolved to protect infant Andorians after they were born. The silk not only was strong enough to protect infants from small predators but also cold winds, and the silk had antibacterial properties that kept the child from getting sick. When the child gets bigger he will eat the silk. Childless Andorians can still produce the silk and often to do sale it intergalacticly but it is difficult to produce a lot and takes a lot of energy. This is why Andorians silk is rare and expensive.
