Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to make a dog stand up [title] Learn about clicker training. [step] Is an effective training method backed up by animal science. You'll need to use one short, easily distinguishable signal that you, such as a " clicker, " a whistle, or a loud finger snap.

Ending1: The clicker sound the dog hears will earn it its name. There are two different options for clicker training : [substeps] Muffle (shouting a random word at the dog over and over again) can make it easier for the dog to understand what you're saying. Ending2: Practice using multiple different signals together, and from time to time, keep reminding your dog if a clicker occurs. [substeps] Dogs respond in much the same way as humans, except that clicker training teaches them to respond in short, delayed bursts of sound with tiny rewards or verbal commands. Ending3: Make this sound the exact instant the dog performs the behavior you want to reward. Always follow the sound immediately with a reward, ideally praise and a small treat. Ending4: Keep the clicker nearby but out of sight, so the dog doesn't hear it. [substeps] Talk to your dog's owner before you approach your dog.

Answer format: ending1/ending2/ending3/ending4