Oh wow. Does he have a trade certification? Many jurisdictions offer those for butchers
My dad is a butcher and I want to learn That's interesting. Does your dad slaughter animals, dress their flesh, sell their meet, or some combination of the three? He cuts them for the local market I see. Well, a butcher is employed in different areas such as supermarkets or grocery stores to butcher shops and even fish markets, slaughter areas, or just be self-employed. He works at a plant close to his home That's surely convenient for him. The art of being a butcher has been around since ancient times when animals were getting domesticated.  Butchers even had guilds in 1272 in England. Yes it is for my dad and really? Butchering is really old then, I wonder how many years it'll take before I can be a master like him. Some areas expect a three-year apprenticeship to be a butcher. Did your dad have to do that? Im not sure he grew up doing it
Today, many jurisdictions offer trade certifications for butchers.