To pet lovers, the disparity between human and canine life spans seems unfair. Efforts to help dogs stay healthy not only keeps them around longer, but pays dividends in also keeping them in as youthful shape as possible.
Not all aquariums are created equal when it comes to sustainability. Energy used to run filters and lights is a major concern. Where the fish originate is another, as well as where they go at the end of the relationship.
Paying attention to the breath is one of the best ways to increase concentration, and the single most important tool in developing and maintaining focus and control when interacting with a dog in any manner.