The Heat Is On

A 5 year old girl asked her Mum, "Mum, may I take the dog for a walk
down
the street and back?"

Mum replies, "No, dear, she's on heat."
The little girl replied,"no she's not sat on anything warm, so can I
take
her for a walk"
Mum replies " no it's not that kind of heat, its her season time"

What does that mean?" asked the child.

Mum replies, "Go ask your father. I think he's in the garage."

The little girl goes to the garage and says, "Dad, may I take Belle for
a
walk down the street and back? I asked Mum, but she said that Belle
was on
heat and to come to you to tell me what that meant."

As her dad was busy working on an old car he was restoring, which
wasn't
going too well, he was in no mood to explain the ins and outs of what
on
heat meant and the 50 WHY questions that would go with it. He sighed,
thought for a moment and said, "Bring Belle over here."

He took a rag, soaked it with petrol, and scrubbed the dog's backside
with
it to disguise the scent and said "OK, you can go now, but keep Belle
on
the
leash and only go once down the street and back again."

The little girl left and returned a few minutes later with just the
leash,
and no dog.

Surprised, Dad asked, "Where's Belle?"

The little girl said, "She ran out of petrol about halfway down the
block,
so another dog is pushing her home."