Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to relieve your dog's boredom [title] Buy your dog new toys. [step] Just as with human kids, dog's can get bored with their toys. Your dog may be bored simply because it is tired of playing with the same old toys and it needs to be able to focus on something new.

Ending1: Once your dog begins to develop in its new house, you can bring your new toy to the dog park to train your dog. [substeps] Try to find a toy that you dog can handle. Ending2: Purchase new toys to keep your dog on board. [substeps] Most toys tend to bring dogs closer together. Ending3: Get your dog some new toys and see if that perks the pup right up. [substeps] Dog toys come in an astounding array of types, from stuffed animals to ropes and balls. Ending4: Provide your dog with toys that can occupy its attention and make it interested in something new. [substeps] Always take your dog off to play outside to exercise it.

Answer format: ending1/ending2/ending3/ending4