<p>Fish/plankton etc are allowed without consent from your floormates. </p>
<p>There are “pet friendly” floors that you can have other pets besides fish on. Those specific floors are designated every year, so I’m not sure what they will be for next year. Those pets allowed include rodent-type animals: hamsters, smaller reptiles, and the like.</p>
<p>If you want to have a pet but do not live on a pet friendly, you will have to get it approved by your floormates (your Residential Advisor will have a meeting at the beginning of each semester in which you can “vote” about this)</p>
<p>Dogs and cats and other larger animals are NOT allowed.</p>
<p>(The only schools I know of that allow cats in the dorms are Caltech and certain dorms at MIT…)</p>