Grazier (or pastoralist) in the Australian context, usually raises sheep to produce wool on medium to large properties termed stations or runs.
A sheep farmer isn’t quite right. IIRC, the US sheep industry is mainly for meat production and done on a small scale. In the 1930’s my grandfather owned or leased almost 750,000 acres.
Well, one of my grandfathers was a plumber, fixing pipes. I do dedicated tech support for an ISP, fixing ‘pipes’ in a way…and my other grandfather was a teacher, and I teach people stuff all the time.
One of my grandfathers wanted to be a neurologist. He ended with a Ph.D. in biology, teaching neuroanatomy. So, his field was related to sciences, same as my intended field, animal sciences and veterinary medicine.