Where shooting by experts is impractical, it is the only proven method which meets all the criteria discussed below. Therefore, I have a clear conscience in the matter of whether I am being cruel when Foxhunting. The Antis claim they are. BUT a large number of scientists who study animal behaviour believe that they are fully in control of their wits. A large body of authoritative opinion has good reason to assume that their genes, together with inherited and acquired learning, have adapted them to the chase.
Stress is a physical condition.
Suffering is a mental condition. The former does not inevitably cause the latter. A marathon runner is highly stressed but is not suffering unless his stress exceeds anything that he has experienced previously and has not, therefore, mentally adapted himself to cope with. Stress produces adrenalin and endorphins which produce exhilaration to mask some of the stress. Also other tactics too numerous to discuss here.