i will tell you a story, i lived in detroit for many yrs. and i went to the pound to find a dog. it took much searching because i wanted a challenge. i found an english setter, covered in feces and they had spay her like that. she was 11 lbs. i brought her home and she gained a lb. a day for 11 days double her weight. that dog was terrible. she pulled so hard she walked upright. she ate my socks and they came out whole.lol but she learned and she saved my life on more than one occasion. see, i have low sugar and sometimes i dont know when its coming but she always did. and she would jump on me and wrap her paws around my neck and refuse to move. at first i didnt know why she was doing this but it soon became clear. and i took her word for it. i will love and miss that dog till my dying day