Annoying little pest

How do you get the key from the rats, he keeps running in the little cave, every time I chase him

Move back and wait for them to come out before dashing at them and attacking.

Or lob you're boomerang at it.

Boomarang is the key to get the key.

Yeah how do I get the boomerang.

Oh yeah I remember you said you didn't have it in lil's team well you need to move the block in front of the hole then go away untill the mouse runs out it will see the hole is blocked and try to run back to the other hole but before it gets there you kill it.

if its later just draw a really mess path and throw the boomerang when the mouse comes by. the boomerang is in a chest in the first dungeon. (not the temple of the ocean king thats the last dungeon)

For me I push the block then point it on the hole. Then I'll wait at the side. The rat will go to the left hole but it's blocked. Then I get outta there and when he goes back, I slash him with a sword. Lol, by the way, there's no boomerang in the first part of Zelda. Only in the Temple of Fire part.