Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to separate a guinea pig for feeding [title] Ensure that bullying is the cause of weight loss. [step] If your guinea pig is losing weight, it's imperative that they see a. Unless you've actually seen other guinea pigs blocking them from food and you're certain this is the only cause of loss, get them checked by a vet to ensure there are no other problems.

Ending1: They could be weakened, depleted, or even bitten by big chunks of food. Any health issues present are cases for you to treat. Ending2: [substeps] Neglect to acknowledge the health concerns your animal has. Try to remember, if bullying has been rampant for a long time and eating will be a constant problem, you may have a health concern. Ending3: [substeps] Guinea pigs can be predisposed to certain health problems that could include high cholesterol or hyperthyroidism. This is why it's a good idea to schedule an appointment to get your guinea pig looked at. Ending4: [substeps] If the pecking order has changed, and there is another bottom pig, the previous lightest cavy may begin gaining weight while the new bottom pig loses. [title] Set up the cage to optimise feeding opportunities.

Answer format: ending1/ending2/ending3/ending4