Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to train great danes [title] Start early. [step] Great danes have an innate need to please, so your puppy will be easy to train. Since your great dane is so large, it is important to start as early as you can to help him learn good behavior.

Ending1: Start preparing him up before he knows he is trusted. [substeps] Place some treats in your dog's crate so that he associates them with you. Ending2: He needs a lot of training, so start your training right around the time of a puppy's birthday. [substeps] Consider encouraging your great dane to follow a leading role in your dog's training. Ending3: When you introduce your great dane to the world, your first instinct will be to immediately take it in for a walk. Letting your great dane stay in a crib or guinea pig pen for weeks or months may take longer than you might think. Ending4: This will ensure that, as he grows, he will listen to you and follow your lead. This will be easier for you because he will be harder to convince to do things the older and larger he gets.

Answer format: ending1/ending2/ending3/ending4