The 5 second rule suggests placing your hand on the pavement; if it's too hot to hold comfortably for five seconds, it's too hot for your dog to walk on.
The 5 second rule helps determine if the ground is too hot for a dog's paws—if you can't hold your hand on it for 5 seconds, it's too hot for your dog.
Yes, you can make a lot of money as a dog walker, especially in urban areas with high demand and by building a loyal clientele or scaling into a business.