Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to protect your dog at a backyard barbecue [title] Ask guests to keep food away from your dog. [step] Keeping inappropriate food away from your dog may depend on other people following the rules. Ask guests to keep plates out of reach of your dog and to not feed the dog any of their food on purpose.

Ending1: These rules could affect your dog's memories and may lead to behavioral problems like ongoing wiping. [title] Make sure your dog's elements are protected. Ending2: Also be clear about what the rules are by having table flags, tablecloths, and other items that visitors should not have near the dog. [title] Remove any objects your dog can jump up and down on. Ending3: If guests are following the rules, you'll need to reinforce them by having your dog keep track of everything that falls in a plate or bowl. [substeps] You can only use edible food items for kids attending this barbecue. Ending4: [substeps] If you tell them the damage it could do to your dog's system, they should respect your request and follow the rules. If you are still worried about guests feeding your dog, put out a dog-safe treat they can feed it.

Answer format: ending1/ending2/ending3/ending4