While there are many reasons why dogs develop separation anxiety, this particular case started because a client was home bound for an extended period of time due to medical issues. (houstonpettalk.com)
Some Maltese can reportedly develop separation anxiety if they are left alone. (pawster.com)
Animals with a history of abuse have a higher risk of developing separation anxiety than dogs that have had a «gentle» life. (beaglerescueleague.org)