dogman · noun1
From dog (“the domesticated mammal Canis familiaris or Canis lupus familiaris”) + -man (suffix denoting someone (possibly implied male) who is an expert in an area, who is employed or holds a position in an area, or who takes part in an activity) or man (senses 2 and 3).
dogman · noun2
From dog (“part of a crane that holds the items to be lifted”) + -man (suffix denoting someone (possibly implied male) who is an expert in an area, who is employed or holds a position in an area, or who takes part in an activity), from the fact that such a person would often ride on the load lifted by the crane when carrying out their duty.
Etymology from Wiktionary, CC BY-SA 4.0.