West Highland Terriers, like most dogs, are social animals and don't do well when left alone for long periods. They crave attention and affection from their humans, and being left alone for extended periods can lead to boredom, anxiety, and destructive behavior. If you must leave your Westie alone for a few hours, it's essential to provide them with enough food, water, toys, and a comfortable place to rest. Consider leaving the TV or radio on to provide some background noise and help them feel less lonely. However, it's not recommended to leave a Westie alone for more than 4-6 hours a day, and ideally, they should have human companionship for most of the day. If you have a busy schedule or work long hours, consider hiring a dog walker or pet sitter to check in on your Westie during the day.