Obviously, this is guided by any instructions you give. You know your pet and any little eccentricities they may have. I also go by how they are acting after you have been away for a few hours and their experience with absent family members. In bad weather, I'm great with animals that frighten easily. Even if they do not wish to be touched, I calm my tone and talk more so they know they're not alone. Eye contact if that's something they are comfortable with. Ugh, I sound wacky, but it really is vibe check. Be aware, I have a fragrance allergy which would need to be addressed before overnight care.