I think that dogs respond to your tone of voice more than just the name. And she may just be responding to the k sound in Chlo and Co. I call my dogs all sorts of things and they respond to lots of names, but I always use the same tone of voice when addressing them. And they can tell the difference because when I talk to Tina it is at a much higher pitch than when I address Tbone. I used to call Tbone Puppy all the time and he will respond to it, as well as Boner, Mr. Bones, Teebes, and so on...
And whatever I call Tina I usually repeat a few times, so she knows it is her. Teen Teen Teen, Tina Tina Tina, Sweet Sweet Sweet... I started doing that so they could tell the difference between Tbone and Tina. Now I just feel silly because I talk to them in such bizzare ways
