Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to make a dog collar [title] Measure your dog. [step] In order for a dog collar to function effectively, it needs to fit properly. To ensure that you make the right size of collar, your first step is to measure your dog's neck.

Ending1: For a 7-to 8-inch (23 x 23 cm) collar, measure from your dog's adam's apple on each side to the base of his vertebrae. Then multiply that number by 8 to get your dog's circumference. Ending2: [substeps] The collar should fit snugly without bending into a bend. Do not choose a band with a hole in it or the dog's neck will probably fall out. Ending3: To measure your dog's neck, subtract inches from length and repeat this for your dog. [substeps] For instance, for a shy dog, approximately 3.5 inches long is ideal. Ending4: The best method is to use a cloth tape measure. [substeps] Measure around your dog's neck where the collar should sit.

Answer format: ending1/ending2/ending3/ending4