Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to leave your pets alone while on vacation [title] Assess your pet's needs. [step] All pets are different and have unique personalities. Some do well when left alone for longer periods of time and others do not.

Ending1: Spend some time thinking about what is always needed and what needs to be neglected. Most pet owners don't actually end up needing to leave pets alone, but some others do! It's important to think critically before taking your pet on long trips. Ending2: Decide if you have the time and work energy to leave your pet alone. [substeps] Some pet owners only leave their pets alone on vacation because they feel they are in a rush to get home or work, feeling sorry for them. Ending3: Your pet needs time to heal and improve, and this is true for all animals. Proper socialization and maintenance can help your pet get the necessary nutrients and attention they need, and might even allow your pet to be more sociable with his companion. Ending4: Pets that are more social, have medical conditions, or that are used to having lots of interaction with others may not do as well on their own for long periods of time. [substeps] Also consider your pet's feeding schedule or if your pet likes to get into things and make a mess when you are not around.

Answer format: ending1/ending2/ending3/ending4