Shadow is lunging when he is on his line
Shadow is our 1 year 6 month old GS who has gained a nasty habit of jumping up onto people , but only when he is on his line in the yard. when he is off he acts perfectly obedient.
He is put on the line because he has a bad habit of chasing our car as we pull off, and he enjoys jumping the fence to explore.
We are not sure how to handle this because he isn't responding well to training when he is on his line.
side info- he has 55 feet of line, very close to his dog house
He knows sit, stay, laydown, go to bed, come, walks well on a leash, and other small tricks
Which is why this behavior is so odd to us.
All comments are welcome and appreciated!!!