I introduced my 10 week old puppy to my 3 hens today and had no idea how things would go! My hens were definitely afraid and my puppy was curious, she watched them and when they ran so did she, right after them! I'm pretty sure she just wanted to play, but am going to make sure to watch them carefully when they are together. If you want to see some pics you can go to the below link. http://www.myattemptatgardening.blogspot.com/2012/02/sometimes-introductions-are-little.html Anyone have any advise on the topic to share? Thanks!!!!