Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to walk a dog on ice [title] Trim the hair on your dog's paws. [step] This is especially relevant if your dog has longer hair. Excess hair on a dog's paws-especially between the pads on its feet-will freeze and become clogged with ice.

Ending1: Cutting off a dead part of the dog's paw can prevent this. [substeps] If you make only a few cuts, you can get a very nice length of hair for a scratch. Ending2: This is painful for your dog, and will take away much of their traction when walking on ice. [substeps] Once you have trimmed the hair, you can apply a thin layer of protective balm to your dog's feet. Ending3: This will shorten the time necessary to walk through the ice, and can make wearing shoes difficult on your dog. [substeps] If you are not careful about your dog's fur, especially once you place it in the ice, you might unknowingly cut it or give it extra length. Ending4: Use a soft wire comb or an ice cream scoop to help remove hair or fluff from its paw pads. [substeps] If you've been buying local dog food, then you'll need to buy a crème brûlée house salt.

Answer format: ending1/ending2/ending3/ending4