The relevant question in animal rights, as Jeremy Bentham pointed out, is not "are they intelligent?", but "can they suffer?" Clearly they can, and do.
Animals need more rights. We need to expand our moral circle as human beings. We have already expanded the tribe to the nation. We now value the rights of women as well as men. We protect the rights of some minorities now, where we didn't before. Animals are next on the list, as soon as people start to develop a greater moral sense.
<b>Xev:</b>
<i>Humans are animals, in which case why shouldn't we do as they do and eat other animals.</i>
Because it causes unnecessary suffering on a huge scale.
<i>Humans are better than other animals, in which case why should we care about them?</i>
You haven't even thought about this, have you? Humans are better than animals ... why, exactly? Humans <b>are</b> animals, Xev.