Described herein is a portable protective shield device for providing an instant protection to a pet animal against a sudden attack by an aggressive animal without causing any harm to the attacking animal. The device includes a pet protective shield capable of being actuated from a ready position to a protective position, the pet protective shield comprising at least one shielding member that, upon actuation, expands to form a shield around the pet. The present subject matter focuses on protecting the pet/animal under attack rather than tackling the attacker.