This dog food can is not really dog food, but a supposedly "safe" place where you can hide your valuables.
But what of real value can you hide in a can this small? If you are willing to spend $19.95 plus shipping from Amazon for something this silly, you probably don't have too much money to start with.
Besides, who feeds their dogs canned dog food anymore? That stuff went out with buggy whips -- quite literally.
For more on the history of canned dog food, see this earlier post.