Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to store dog food [title] Be aware that dry dog food can spoil. [step] Dry food isa convenient and cost effective way to feed a dog and requires minimal storage space. However, if the dry food is not stored properly, it can spoil and make your dog sick.

Ending1: It is recommended that you store dry dog food away from direct heat. [substeps] Refried beans, shredded chicken, rice, and ground beef are prone to drying and spoiling. Ending2: The fats in the food can go rancid while vitamins can be destroyed if the proper conditions are not met. [title] Leave dry food in the original bag. Ending3: It can also spoil the dog's taste buds, which can stop your dog from eating it. Buy dry food products like these to start a small house for your puppy. Ending4: Dry food should be stored in a cool, dark room, ideally in a barn. [title] Check your dog's temperature regularly.

Answer format: ending1/ending2/ending3/ending4