I have teeth but i don't bite. Who Am I ?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What does below rebus means ?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

The centre of the third figure is empty. What digit should fit inside?

Can you decipher the below rebus?

PBLUESAISNUERSES

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

I am lying and I always lie. Tell me whether I am lying or telling the truth.