I have a 90 lb yellow lab, and I just got Schatzi, who is 2.5 lbs. At first, my lab was afraid of her!

But after the introductions, they are getting alog very well. I am actually surprised he is so cautious of her when they play (so far). Today they were playing tug of war with a rope bone, and Schatzi thought for sure she was going to win.... and she did! It was hilarious

my lab is acting like her big brother, it's really cute-