I would still argue you can put more feeling and passion into shouting Seagulls. The longer the 'Sea' the better the experience.
Chanting 'Wolves' is very flat and you cant do anything with the intonation.
Cant think of another nickname in the whole of the football league that is so nice to shout out and gives such a feeling of satisfaction for supporters.
I know we're biased but I never remember 'dolphins' being chanted and if you were a Northampton supporter for instance would you enjoy...