please help out with a frog rescue!

[gatorboy]

Hi everyone,

I know nothing about frogs. My daughter came home from school the other day with a tiny frog. Her teacher said let it go where they'd found it. But it's snowing there now. (I'm in Japan. Northern part of Kyushu island in Fukuoka.)

I'm afraid if I just let this little guy go he's not gonna make it.

He's about 15mm in length.

What should I do? Let him go or try to keep him until spring?

If I keep him, what sort of environment should I make? What could I feed him?

any thoughts here greatly appreciated.

thanks,

gatorboy