Mine has lasted two weeks without food.
It is winter now, so I have to be extra vigilant for the bugs I see so I can capture and feed them to my spider whom I named Jeffee.
He seems quite weak, so I must be sure that any longer than this, and he just might die. But to get back on subject, I am guessing two weeks, no more than three.
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4 i think Spiders live longer than 4 days. It depends on the type of spider. My pet trantula, for example, lived for 3 monthes b4 i finally forgot to refil her water >_>. there might be a few spiders that only live a few days, but i do know for certain most spiders live longer than 4 days (sorry if you have arachiphobia)
well that depends. is it a tarantula? small spiders that we see arround North America probably wont last long, maybe a couple weeks without food. tarantulas (i keep them) can (and ive seen this) go up to 2 years without eating and still be fine. this varys on speices.
Depending on the species, a few day, to a couple of weeks or even a month or so.