Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to pick a healthy gerbil that suits you [title] Observe the gerbils for a while. [step] Which seem active? Which seem happy? Look closely at the animals and see if they are generally perky. [title] Look for any symptoms.

Ending1: [step] Gerbils live a long life and do not do well as pets. If you see any signs of a problem then your gerbil might be ill. Ending2: [step] Are their eyes open and bright? Make sure none of the gerbils have wounds, these are usually indicators of a past fight. Their coats shiny and well kept? A rough coat is usually a sign of illness. Ending3: [step] Watch out for : [substeps] A clicking beak for eating symptoms one wanting to stop moving or burying a few clicks clicking of the lips going dark brown skin. A panting face that could lead to hunger, which could indicate that the gerbil is bored or is irritable. Ending4: [step] Normal or docile gerbils of a weight between 29.5 and 23.6 kilograms are typical gerbils. [title] Keep checking with your vet if you have concerns.

Answer format: ending1/ending2/ending3/ending4