Granted, welcome to your new job here at Universe Inc. As Master of Universe Inc., you have almost unlimited power about the universe, but with a catch. Anything you would want to do will have to be filled out with Form 3765-b, in triplicate, and then sent to our parent company, Gods and Godesses Co., for approval. This will take 6-8 Business days, unless they get lost in the mail, in which you will have to repeat the process again. If it is denied, you can always file a 3766-a to try and appeal to the bosses... Ninjas...
Granted, however, that dog can only appear in your dreams, a figment of your imagination, your sick and twisted imagination that ended up planting you in the insane asylum you are currently residing at.
I wish I was a wizard, in modern day so I'm not burned at the stake, and I have no access to any kind of space/time mumbo jumbo to screw that up, and that I use my powers to bring peace to the world.