Please choose the correct ending to complete the given sentence: Work World: [header] How to obtain service dog papers [title] Evaluate your dog's temperament. [step] Any dog must have a particular set of qualities to have potential as a good service dog. Your dog may be a relatively obedient and well-behaved pet, but that still doesn't mean it's cut out to be a service dog.

Ending1: Pay attention to your dog's activity level and personality and see if he has developed a particular temperament that is generally acceptable. [substeps] Some dogs may be aggressive and destructive. Ending2: Your dog should be willing to act his/her best and endure challenges on its own. [substeps] Your dog should be responsible for his or her own safety and well-being. Ending3: [substeps] Generally speaking, service dogs should be calm, friendly dogs that are quick learners and can retain information. You want your service dog to be alert and attentive, but not one that reacts to every trigger or chases every distraction. Ending4: [substeps] Different breeds possess different characteristics, so there are many factors to consider as you draft your doggy document. Talk to the owner of the dog to find out its temperament and strengths.

Answer format: ending1/ending2/ending3/ending4