its a funny one this, dogs do have good days and bad days and you as a person who owns the dog you ve got fit have to take into account
has the dog been given fair law to get onto is prey or you hoping of miracles,dogs are nt thick and they sometimes know they are beat ,
but i would class a jacker as one which is constant at refusing to do its job you know it can do,
similiar to greyhounds you cant expect them to win every run but they do come off the boil , then get laid off till their right
personal cicumstances and different dogs will vary and always will
a jacking dog what main prey i