If you plan to bring a Cerberus into your home, there are some things you should realize:

• Each head can have its own personality, complicating and lengthening the training and disciplinary process.  You may often find yourself in a position where you must discipline one head and not the others.
• You must spay or neuter your Cerberus.  Aggression and scent marking will be the least of your worries if you do not.
• A Cerberus may instinctively guard entryways, making them great guard dogs, but this can be awkward as guests arrive for your dinner party.  Re-purposing this energy into something productive can be difficut but rewarding.  Food aggression is a common symptom as you make progress.
• Do not be tempted to saddle your Cerberus.  They are large enough to ride, but neither you nor they would like the experience, and it will ruin the trust you have built up to that point.

If you follow my guide, you can have a great and rewarding relationship with your Cerberus, lasting the full eternity that they live.