Now he doesn't get enough exercise because now I only take him out when I know I have unlimited time or I know my boyfriend is a call away and can come rescue me. He is a year old mix (we think border collie/golden retriever). He is over 50 pounds now so I can't just pick him up and walk a half mile back to the house like I used to. He loves the walk but almost always chooses to just sit or lay down on the ground and refuse to come - not matter how much begging and pleading I do. And he doesn't care about treats when he is refusing to walk/come in. I love him and I know exercise is important for his health. I am active myself and want to take him out a lot more. Please help!