The amount of exercise your dog needs before being left alone can vary significantly based on their age, breed, size, and energy level. However, a general guideline is to provide at least 30 minutes to 2 hours of physical activity before leaving them alone, depending on these factors.

1. **High-Energy Breeds**: Breeds such as Border Collies, Australian Shepherds, and Labrador Retrievers typically require more exercise. Aim for at least 60-90 minutes of vigorous activity, such as running, fetching, or agility training, to tire them out before you leave.

2. **Medium-Energy Breeds**: Breeds like Beagles, Cocker Spaniels, and Bulldogs may need about 30-60 minutes of exercise. A good mix of walks and playtime can help satisfy their needs.

3. **Low-Energy Breeds**: Breeds such as Basset Hounds or Shih Tzus may only require 30 minutes of moderate exercise. Short walks and some indoor playtime can be sufficient.

4. **Puppies**: Young dogs have bursts of energy but also need plenty of rest. A few short play sessions totaling 30 minutes can be ideal, ensuring they don't get overtired.

5. **Senior Dogs**: Older dogs may not need as much exercise, but they still benefit from regular activity. Short walks and gentle play for about 20-30 minutes can keep them healthy.

In addition to physical exercise, mental stimulation is also crucial. Consider engaging your dog with puzzle toys, training sessions, or scent games to keep their mind active while you're away. This combination of physical and mental exercise can help reduce anxiety and destructive behaviors when left alone.

Always observe your dog’s behavior and adjust the exercise routine as needed based on their individual needs and energy levels.

This answer doesn't make sense or isn't related to the question. Mark it as a probable hallucination of the AI model.

Topics covered in this question:

Dog Behavior Dog Care Dog Training Pet Care Dog Exercise