Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to carry an injured dog [title] Use a pet carrier if possible. [step] If you have a pet carrier that you can safely place the dog in, do so. This is the best option to protect both you and the dog.

Ending1: It's simple: fill the carrier up to the pup's chest. [substeps] Most pet carriers have gaps or special loops, especially in the bottom, so you want to make sure the carrier can hold all your dog's weight at once. Ending2: [substeps] The carrier might help cut down on the time you can spend carrying the dog, providing you a wide, open area to move and hold your pet. Your mobility will decrease greatly when carrying your pet in a carrier. Ending3: Encourage it to lie down, and support its body with anything soft to minimize movement during transportation. [substeps] For more significant injuries, or in scenarios where the dog is having trouble breathing or is unconscious, you'll want to move it as little as possible. Ending4: [substeps] Consider placing the carrier in the middle of your living space or near a corner or a carpet, but do not place the dog in it unless absolutely necessary. The dog will often be injured if there is too much movement.

Answer format: ending1/ending2/ending3/ending4