One of the first things you can try is to ease your pet into alone time. Instead of surprising them with your or your child’s sudden, prolonged absence on the first day of school, start spending time away from home in small increments. This way they can get used to not having their loved ones around all of the time. Also, leaving a used t-shirt or blanket with familiar smells may comfort them while you are gone. When animals are under stress or under stimulated, they tend to exhibit unusual or exaggerated behaviors. Separation anxiety usually results in telltale signs that include accidents, chewing of household items, excessive barking, scratching, panting, pacing, whining, disobeying comfortable commands, or waiting by the doors or windows for extended periods of time.