Don't go blaming daddy longlegs for pesky bug bites. They don't even have fangs. The have mouths that are more similar to those of crabs and scorpions. To defend themselves from predators, they omit an odor that keeps dangers away.
Of course daddy longlegs isn't their official name. They are actually their own separate order called Opiliones, but go by harvestmen, daddy longlegs, shepherd spiders, grandfather greybeards and phalangids.
Daddy longlegs sometimes use an interesting way to protect themselves. They do something called "whirling," where they anchor themselves to their web and spin their bodies in circles to appear larger to potential predators.
Similar to a lizard, if a daddy long leg needs to escape a predator, it can detach its leg. Unlike lizards, their legs do not grow back, so it's not uncommon to see a daddy long leg with six legs instead of eight.