I thought the same when I first looked at it. :rofl:
My Weimaraner is sort of like that whenever I get something new. She'll hang out right next to a tank and watch the new creature for a few days. I know when the new creature has gone out of sight or into hiding when I hear frantic whimpering and whining.
Really adorable! I have my fish tanks in one room and don't allow my cats access. They are destructive and highly predatory and i'd be afraid they would try and catch and kill my fish (most of my tanks are open-top). Wish I could trust my cats more so I could catch them being cute like this. Oh well