Yes, definitely. However, owners do not always react well to a random person confronting them. Sometimes it is best to go to the management of the shopping centre, or wherever the owner may be, and have them make a call throughout the centre, asking where the owner is. This way the owner becomes embarrassed and likely will not do it again. Having said that, management may not always do this for you and so your other options are to call the RSPCA or the police.