Fish.

A fish can ask for nothing more than a smaller bowl. Fish are consistently upset, knowing the bowl they reside in is too large. They don’t know how to properly make use of the space. The fish know, that as single bachelors it is irresponsible to have a much space as they do to themselves. It requires more water, more upkeep, more decorations, and overall more materials to maintain. The carbon footprint of a fish in a large bowl is much greater than it needs to be. Fish are very conscientious of this. A fish knows when he owns too much land, and they are more than willing to give it up. The logistics just prove too difficult to downsize often. Fish are commendable creatures that really do want to make a difference by reducing their carbon footprint and living a simpler, less obtrusive life.