Bingo was a smart dog he could sniff anything out even clues

One day he sniffed out a letter

To Lizzy the dog

I thought I saw you at daycare last week, so if you can  come and hang out with me.

Kind regards,

 Loe the dog

Bingo was interested in the letter thinking is it old or modern.

Bingo asked all his friends if the letter was old or modern

WOOF WOOF?

But they all say,'' I don't know?'' Bingo was frustrated, and hungry for clues.

So he whined to his owners in dog language,'' have you got a book of how to be a dog detective.

But his owners didn't understand, Bingo was sad. 

After a month he kept looking, and trying to find out if it's old or modern.

He thought it's time to give up, but then he thought again, and woofed happily.

I can ask the big wise old dog! WOOF!