In addition to the attitudes it is depicted in, a certain variety is present in heraldic lions regarding the presence of additional physical features. Beyond the presence of double or forked tails, heraldic lions are sometimes depicted with two heads, as in the case of the arms of the Mason of Birmingham, from whom they were passed to the University of Birmingham. Alternatively, a lion may be depicted with one head connected to two distinct bodies, in which case it its termed bicorporated. If the conjoined bodies are three, the lion is instead termed tricorporated. These multi-bodied lions, however, are very rare.