I’m tall when I’m young, and I’m short when I’m old. What am I?

I have an eye but still cannot see.

Who am I?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

What has many keys but can’t open a single lock?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What have one eye but still cannot see?

I know a nine-letter word having only one vowel.
Do you ?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?