i have a 8 month old 1st x whippet greyhound he use 2 jump no problem but he caught his paw 1 day in a fence and gave him self abit of sore 1 the problem is now he refuses to jump i have tried everything to get him jumping again with the praise or jus walking away but i always end up aving to lift him over dose anyone have any pointers they could give me to try and get him jumping again cheers