There are several possible outcomes - from at one end fear and loss of condition in the stock (minor), through direct livestock attacks (significant and horrific), through to chasing preganant ewes / cows which can often cause the herd to abort their foetuses (massive financial loss).
I have not known a farmer shoot a dog just for running through a field...they may though give the owner a well deserved ear bashing! The law is clear on the subject that a farmer can shoot a dog actively attacking livestock - but should attempt to capture the animal first, and I am sure that any responisble farmer would try that (most farmers don't routinely wander about with a shotgun in any case)
Certainly though the police are likely to be called - and a criminal prosecution can result under the Dogs (Protection of Livestock) Act 1953 - it is a criminal, as well as a civil matter if it happens.
I have not known a farmer shoot a dog just for running through a field...they may though give the owner a well deserved ear bashing! The law is clear on the subject that a farmer can shoot a dog actively attacking livestock - but should attempt to capture the animal first, and I am sure that any responisble farmer would try that (most farmers don't routinely wander about with a shotgun in any case)
Certainly though the police are likely to be called - and a criminal prosecution can result under the Dogs (Protection of Livestock) Act 1953 - it is a criminal, as well as a civil matter if it happens.