Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to treat heart conditions in doberman pinschers [title] Get your doberman screened for the condition. [step] Dcm affects young to middle aged dogs. It is now known that early treatment with a drug called pimobendan before symptoms develop can protect the heart in dogs that have dcm.

Ending1: Therefore it's important to screen your doberman for the condition even if they show no signs. [substeps] Pimobendan is proven to increase survival times by improving the ability of the heart to contract. Ending2: [substeps] Young dogs with this disease are at a higher risk. It does a lot of damage to the cells lining the liver and kidney. Ending3: [substeps] You will need to take your dog to a vet to become screened for the disease. You will need to get your dog the heart x-rays taken and measured. Ending4: With this treatment, your dog is able to have no symptoms at all. The duration of the treatment is the same for all dogs.

Answer format: ending1/ending2/ending3/ending4