Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to prevent gum disease in cats [title] Brush your cat's teeth every day. [step] Daily brushing helps to remove built-up food particles and plaque from your cat's teeth. Subsequently, regular brushing is the first step in preventing feline gum disease.

Ending1: Going slow with a brush may also help prevent a buildup of plaque and dental bacteria. [substeps] However, if your cat eats its food in small amounts throughout the day, brushing its teeth frequently may help reduce plaque build-up. Ending2: [substeps] Visit your local pet store and look around for a brush. If you have purchased a cat brush that is designed to fit the cat in a short period of time, such as five minutes, you can brush its teeth every couple of days. Ending3: [title] Take your cat to a veterinarian for regular dental checkups. [step] The vet will examine your cat and recommend treatment, if necessary. Ending4: [substeps] Brushing is best done after your cat has first developed gum disease for 6 months, keeping it clean and working it into teeth. [title] Get your cat to spend time with their family.

Answer format: ending1/ending2/ending3/ending4