Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to design a dog agility course [title] Evaluate your dog's capability. [step] As you start thinking about what obstacles you want to set up in your course, consider your dog's capability. Make sure plan obstacles that are appropriate for your dog's size.

Ending1: There are many different courses available for dogs with high agility needs. [substeps] Many dog agility training courses require medium size dogs that can jump a given distance in a given location. Ending2: This will help you prepare your dog for the jumps and a successful course. [substeps] Plan obstacles for your dog's size by having certain weight limits laid out in the course's background. Ending3: A dog agility course can go from small to complex and not accommodate enough environment for your large dog to easily handle. [substeps] Choosing a course designed for dogs that can really move from high trainers to porcupines is a good idea. Ending4: A corgi, for example, could not get through a tire jump meant for a german shepherd. [substeps] Also consider any limited ability your dog has.

Answer format: ending1/ending2/ending3/ending4