Tumor types: There has been a long-lasting debate about classification of canine mammary tumors. According to the World Health Organization (WHO), canine mammary tumors are histologically classified into four categories: malignant tumors, benign tumors, unclassified tumors, and mammary hyperplasias/dysplasias.
Gandy dancer is a slang term used for early railroad workers who laid and maintained railroad tracks in the years before the work was done by machines.
In Irish dance, a reel is any dance danced to music in reel time (see below). In Irish stepdance, the reel is danced in soft shoes and is one of the first dances taught to students. There is also a treble reel, danced in hard shoes to reel music.