Recap: Fawn is the 13 week old sheltie mix I'm fostering. I have had her a week and a half. She and her brother were found starving to death in a ditch. The day after I took Fawn, her brother went into a foster to adopt placement. The mother was never found. Fawn does not see well, and should be going for futher testing when the shelter can get the money together. She isn't showing any other health problems. In a week and a half, Fawn has gained almost three pounds, moving from 6.9 to 9.7. She has energy, has become more social, and is doing very well. She went back to the shelter today for a check-up, and we happened to run into her brother and his new family. He's a moose. The shelter manager clocked him in at 21.5 lbs! :yikes: Now, I know that there is a large possibility that the two of them have different fathers, but they were nearly the same size a week and a half ago. Would any of you worry about there being that big of a size difference between littermates in less then two weeks? Or should I just focus on the fact that Fawn seems to be getting healthier by the day?