Most Intelligent Dog in the World - Border Collie

Katie Mc says about that
I used to have a border collie. Her name was sissy. she used to play fetch all the time.she even knew how to do that crawl trick.i think it's called Canadian crawl but I'm not sure.i had her when I was born to when I was starting kindergarten. I loved her SO much!but sadly,she died of diabetes because she got really old.but the only good part about it is that I was like 5 so I didn't really remember that much or get as sad as I would now.i miss her so much!