Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to heal a torn dog acl without surgery [title] Understand when it is safe to forego surgery. [step] Both surgical and non-surgical (conservative) methods can be used to treat acl. A combination of both methods is usually helpful for the dog.

Ending1: A general rule is that surgery is not recommended until recovery is made, otherwise the dog could die. [title] The use of surgery is potentially dangerous. Ending2: Antibiotics generally (unless your dog is receiving special medication) are not needed. However, in some cases a bandage (and possibly dental treatment) may be needed. Ending3: However, the type of therapy recommended varies based on body size, body condition, and severity of lameness of your dog. [substeps] A dog under 20 kilograms may not be a good candidate for surgical procedures. Ending4: [title] Focus on avoiding surgery, especially if your dog has a stitched wound. [step] Keep in mind that c-sections are necessary to repair the wound.

Answer format: ending1/ending2/ending3/ending4