How long is a frogs lifespan?

My neighbor found a bunch of tadpoles in their pool cover so they brought them over to my house and asked if i wanted them, so i said yes, of course. Who could say no? They're so cute! Anyway, i was just wondering how long they would live so if you could help me out that would be great!

They can live for a long time depending on which type. This can tell you more:
http://allaboutfrogs.org/weird/general/l...
good luck...