Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to clicker train a cat [title] Get a clicker. [step] A clicker is a small plastic box with a metal tab in it. When you press it, it makes a clicking sound.

Ending1: Once your cat hears the clicking, you can use the clicker. Clicking the clicker is a way to increase the amount of " click " of treats you give your cat. Ending2: These are available online or in pet stores, and they cost as little as $1. These are commonly used to train dogs and cats. Ending3: It gives your cat a signal that it is prepared to attack. If you click it just a couple of times, your cat will bite it and give it a treat. Ending4: You will hear it clapping, howling, and then repeating a phrase as you pet your cat. The clicker will help you control your cat's movements when you clicker train it.

Answer format: ending1/ending2/ending3/ending4