Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to house train your dog [title] Take your dog outside frequently. [step] This is the most important thing you can do to teach your dog to relieve himself outside. While it may seem excessive, try to take him outside as frequently as possible, about every half an hour.

Ending1: While you aren't necessarily willing to spend every minute of your time outside, you should still take the dog outside once or twice a day. If you can, try to keep it indoors during the daylight hours. Ending2: If you are walking your dog around a mall you could even take him to the shop to relieve himself outside, too. [substeps] Place your dog in his crate and sit in your car while you sleep. Ending3: As noted, your dog is a very active dog, so be sure to keep an eye on him when he needs to relieve himself. [substeps] Hold him outside in the middle of a big yard full of other dogs if he walks to the front of the yard, sometimes even while he is inside. Ending4: Stick to a schedule and try not to miss even one designated " outside time, " since your dog will learn to associate these outside trips with relieving himself. [substeps] If you're training a puppy, you'll need to take him outside more frequently.

Answer format: ending1/ending2/ending3/ending4