In April I lost the love of my life in the dog world, a female show line that was barely 3 yrs old, smart, easy to train, easy to live with and my constant companion 24/7. Her life was cut short due to a very aggressive breast cancer that spread to her lymph nodes and I had to let her go within 3 months of discovering her condition. I was extremely heart broken. The trainer where I use to take her for training heard about my girl and offered to give me a male working line pup out of extremely nice blood lines. Having wanted a male, working line pup for some time, I accepted his offer. For the most part I really love my boy. He is a big, strong boy (somewhere around 73-75 pounds) at barely 9 mths. Not only is this my first working line pup, but I am not exactly young, I am 60 yrs old and decided it is time for me to try my hand at trialing my pup. For the past 3 weeks he has been challenging me something awful. He growls, bares his teeth, and will flat out try to bite me when giving him corrections on the field during bite work. It has gotten to the point the trainer is having to choke him up, using a dominant collar, and basically not give him a bite except for one when he calms down as a reward then put him in his crate. He has also started challenging me at home with his toys. I really don't want to give him back, I have never given up on a dog, but sometimes I feel like I am not the right person for this pup. Please tell me it gets better as the training progresses and he matures. I am already attached to him and really don't want to give up on him:frown2: