A little girl decided she wanted to take her dog for a walk. Before she could do this, she asked her mom, "Mom, can I take Belle for a walk?"
Her mom replied, "No, because Belle is in heat."
The little girl then asked, "Heat? What's that?"
The Mom said, "Go, ask your dad. He is in the garage."

The little girl went to ask her father. She said, "Dad, can I take Belle out to walk? Mom said No, because she's in heat"
The father thought a moment, got a rag with gasoline on it and rubbed it on the dog's backside to hide the scent. He said, "There, you can take her but only around the block one time"

The girl came back a while later, but with no dog. Her parents asked what happened. The little girl said:

"She ran out of gas on the way, so another dog is pushing her home."