Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to make an outdoor dog an indoor dog as it ages [title] Start slowly. [step] If you want to make your outdoor dog into an indoor dog, you shouldn't just bring them inside and expect them to stay. You have to introduce them to being indoors slowly because they've lived their lives outdoors up until this point.

Ending1: [substeps] If you were to bring your dog inside to go on walks or to play, they may be ready to live indoors now. [title] Understand that it will not last long. Ending2: [substeps] Try bringing the dog inside using a leash or just leading them inside. Let them stay inside for a few minutes, then take them back outside. Ending3: They'll need time to get used to the outdoors together, since they will become active owners when the outdoor dog gets older. [substeps] Instead of pushing them toward the outdoors, try to look for a place with greenery so they can expose themselves. Ending4: This usually requires allowing them time to adjust to being inside, perhaps a week or two. [substeps] It's important to keep your indoor dog indoors for several months.

Answer format: ending1/ending2/ending3/ending4