Dalmatians are often associated with firemen. There is an interesting background behind this tradition that can be found at the link below; but here's a brief summary.

This tradition dates back to the days when fire engines were pulled by horses. Dalmatians have a natural calming affect on horses and are also very loyal and protective. These strong dogs would act to calm the horses during long and stressful fires. At the same time, they would protect the firefighting equipment from being plundered while the firemen worked.

Today, Dalmatians are rarely seen in the fire service. Some fire stations do still keep a pet dog out of tradition. Every once in a while you might even here of a Dalmatian still riding on an engine, but I have no evidence to back that up.

• http://www.local1259iaff.org/dalmatians.html