It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

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

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

A man was telling some of his war stories to his grandchildren.
"When the World War I was on the verge of end, I was awarded for my bravery for I had saved a group of my men." He coughed and then added, "When we were fighting in northern France, an enemy soldier threw a grenade at us. Before it could explode, I picked it up and threw it away. For my act of bravery, right before the war ended, A General gave me a sword engraved with the words "Awarded for Display of Bravery and Heroism in World War 1"."

Hearing this, one of the grandson spoke up. "Grandpa, this is not a true story. It can"t be true!"

The truth is that it was not. How did the grand children know it?

What kind of band never plays music?

How can you take 2 from 5 and leave 4?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

Decode below rebus
D
N
A
T
S , D

Can you spot the hidden girl in the picture below?