Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to whelp and raise a single puppy [title] Clip your dog before it gives birth. [step] About a week before your puppy's expected birth date, you should clip your dog's hair to prevent birth fluids-which are difficult to remove-from getting matted in it. Trim your dog's hair around the vulva and belly using a pair of dog shears.

Ending1: Start at the belly and work your way down. A box cutter, a pin, the tip of a chopstick-whichever tool works best-are important options for trimming your dog's hair. Ending2: The hair from the tail to ankles should be uniformly cut short. [title] Provide a comfortable space for your dog. Ending3: Then trim off bits of fur that will stay stuck to it during labor or whelping. [substeps] Be sure to cut inside the vulva, not out. Ending4: These dog clippers should be about a half-inch thick. [title] Trim your pup's hair down to a length that the puppy can walk in.

Answer format: ending1/ending2/ending3/ending4