Just like a human medical emergency, follow the same DRSABC principles of handling an animal medical emergency.
D - Danger - make sure it is safe to approach your pet. Use a blanket/ towel to handle cats or a makeshift muzzle for larger dogs.
R - Response - determine if your pet is conscious - look for any signs of movement.
S - Send for help - ask another person to call us while you assist your pet.
A - Airway - only check the airway if your pet is unconscious - pull the tongue out of the mouth and look for any obstructions.
B - Breathing - watch the chest to see if it is rising and falling. If your pet is not breathing administer two breaths.
C - Compressions - After two breaths if no signs of life, commence CPR.