I have had Tuco for 3 years and Evita for 2 years. I got these two dogs when they were very young pups. I should say that Tuco and Evita were rescued by us. Tuco was terribly neglected, and Evita was phsyically and mentally abused. We have worked very hard with these two dogs, but I believe that the memory of "something very bad" must stick with them. Perhaps that's why Evita gives in so easily and simply sits down, head tucked to the side, instead of meeting a conflict. I have had Blondie for 4 months, and our estimate is that he is about a year old. As far as we know, Blondie was not abused or neglected, just a little unfortunate in the people who thought they wanted him. All of the dogs have had regular vet. visits and all of the dogs have been surgically altered, so to speak. All of the dogs are mixed breeds. I took Tuco in the car last night for a "test ride." He whined and trembled, and refused to get out of the car, even at the DOG PARK I verbally coaxed and then physically lifted him out -- then he was fine! Fortunatley, he did not pee all over the car, as he had before. HELP!