To make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof. Section. 9.
Bottlenose dolphins eat several kinds of fish (including mullet, mackerel, herring, cod) and squid. The composition of their diet depends very much on what is available in the area they live in and also on the season.
Otters arent the only ark creature that eat only fish. Also remember if you're putting it in a feeding trough and other dinos are around, the fish are eaten by all meat eaters first before regular meat because of the food values.(ie lowest food value consumed first and fish are lower than reg meat).