This sweet girl came to us when we were visiting another overcrowded shelter.  She was in a dirty pen and we knew we couldn't leave her there. Heidi is beyond sweet. We really love this little girl. Heidi must have been someone's dog. Unfortunately, she tested positive for hearttworm and will need some more time for her treatment to be done,  two or three months maybe. 
Heidi could easily be an only dog although she gets on well with the dogs she lives with now too. She is cocker spaniel size, ish.