Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to become a dog walker [title] Start working for an agency. [step] A good place to learn the ins and outs of the dog walking business is under someone who is already in it. Look for a large, local dog walking agency and contact the people there to ask if they need any help.

Ending1: Additionally, talk to close friends who also tend to work in dog walking positions. Keep in mind that several companies have hired dog walkers in the past and you may be able to conduct an additional background check to determine if your company is accepting permits. Ending2: [substeps] Keep in mind, however, that you can start your own business already, which may seem like a lot of work to have. [title] Find a place where you can spend a lot of time. Ending3: This can be a way to both learn about the business and animal safety. [substeps] In the long run, this is often the best path to your own business. Ending4: Some dogs are exceedingly talented in their own ways. You want to give up some of your work and go to the professional agency to see what they need.

Answer format: ending1/ending2/ending3/ending4