Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to adopt a guinea pig [title] Make sure no one at home is allergic. [step] In addition to guinea pig allergies, many people develop allergies to the hay that guinea pigs use in their cages. Before adopting a guinea pig, you and your housemates way want to talk to your doctor or an allergist to ensure that no one in your home will have an allergic reaction.

Ending1: [substeps] You may want to take your dog to get checked out by a veterinarian as a last resort or if another pet must be checked out for any reason. [title] Keep vegetables and seeds in the cage. Ending2: [substeps] One of the most common reasons people give up guinea pigs is an allergy, either to the animal itself or its hay/bedding. Rule out allergies before adopting a guinea pig. Ending3: Common allergens like hay will be exposed to the hay rather than the foods. [substeps] Always check the hay in the cage before you leave the house or pack a bag to avoid inhaling it. Ending4: [substeps] Know that guinea pigs can react badly to allergens. You may have to accept challenges if you use them in preparation for adopting and maintain full supervision.

Answer format: ending1/ending2/ending3/ending4