Daddy Long-legs are NOT Spiders. Really.
Got another call about an animal. This time it was a guy that had a bet with some other people that a Daddy Long-legs is not a spider. (His friends are obviously not serious gambler-types making bets about things like this). But I told him he is brilliant and correct (maybe I didn't say brilliant, but I did say he is right). I like when I can make someone happy that way, it is much easier than telling someone I think he is wrong and then he gets highly offended and takes it to the "nth" degree (remember Joe the Physicist?)
There are several misconceptions about the little Daddy Long-legs. Most people think they are spiders. Many believe that they have tiny fangs full of extremely dangerous poison, so "thank goodness the fangs are too small to break skin and inject that highly toxic, people-killing serum". Both beliefs are malarkey.
Daddy Long-legs are actually more correctly called Harvestmen. They are not spiders, nor are they insects. They are Arthropods like insects, and are in the same Arthropod group as spiders (Arachnida), but they aren't spiders either. Whereas insects have three body parts (head, thorax and abdomen) and spiders have two (head and cephalothorax), Harvestmen have only one. It is a fused section where their eight legs are attached.
Their beautiful, long legs from where they get their common name (sometimes 30x longer than their body) each have 7 segments and can regrow if broken off. This may be a defense when a predator handles them, but it isn't a preferred event. They spend a lot of time caring for those legs, including copious amounts of time cleaning them. If you look closely, it might appear they have more than eight legs, but they actually have two jaws and two other sensing, food-capturing/holding appendages (called pedipalps). Their legs are really important, not just for getting them from place to place, but the second pair serves as ears, nose, tongue, and perhaps even as supplementary "eyes." The legs are full of nerves and thousands of tiny sense organs. So even though they CAN grow legs back, if they lose the "critical" second ones or more than one, it just may do them in, so be gentle with them if you must remove them from your home (although why would you??)
As for food, Harvestmen aren't strictly carnivores like spiders, but like spiders they can remove harmful insects and also help "clean up" our Earth. They have a varied diet of mostly decomposing plant and animal matter and also living things like fungus and plant sap. They are also known to prey on live insects, mites, slugs, spiders and even bird droppings. Who knew something would eat bird droppings?!
The guys are usually smaller than the ladies, although they have longer legs. They mate in spring and summer and the females lay eggs in wood that overwinter before they hatch out. One year is the typical lifespan of this fascinating, useful and non-dangerous animal.