A Vet who's practice consists primarily of treating farm animals learns that cost effectiveness is always a consideration. They generally don't establish themselves in cities.
A Vet who's practice is mostly with pets learns real quick that the animal don't write the check, so he's more "empathetic" than "pragmatic". And he can locate anywhere.
I think thats a fairly valid observation..Difference really comes down to how (generally) farmers and pet owners view the their animals..