Logic riddles with simple answers

What does this stand for? The 7 D S

What gets wet while it's drying?

I go around all the places, cities, towns and villages, but never come inside. What am I?

What do you throw out when you want to use it, but take in when you don't want to use it?

Weight in my belly, Trees on my back, Nails in my ribs, Feet I do lack.

What has a head like a cat, feet like a cat, a tail like a cat, but isn't a cat?

I am a vehicle. I spell the same when you read me forwards as well as backwards. What Am I?

A word I know, Six letters it contains, Subtract just one, And twelve is what remains.

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

I create my lair with earthen string and dispatch my prey with a biting sting. What am I?