You're going on vacation but just can't bear the thought of leaving the family dog behind. If you want to take Spot, you'll need to plan ahead.
Depending on where you're headed, you may have to quarantine your pet, especially if you're leaving the country. Even a simple airplane trip involves planning. Many airlines require a certificate from a veterinarian stating that your animal is healthy enough to travel. Check with your airline well in advance. Your vet should be able to help if you have any questions.