Mill Creek, California, is a small community in Tehama County known for its close proximity to Lassen Volcanic National Park. While specific pet amenities in Mill Creek might be limited, the surrounding region offers ample outdoor opportunities. Dogs are allowed in certain areas of Lassen Park on a leash. Check specific regulations for trails and campgrounds. For pet supplies or healthcare needs, nearby towns like Red Bluff have pet stores and veterinary services. Remember, as a rural region, it's crucial to confirm pet-friendliness of accommodations and specific sites before visiting Mill Creek with your furry friend.