Almost a week ago someone's dog came onto our property and attacked our ducks. I thankfully was home and the dog hadn't been able to really hurt any of them before I ran outside. Once I got out there the dog was on top of one of my ducks with its two front paws holding it down, and it was no small dog. I scared it off and at first the duck limped away, then started walking normal again. She had no gashes or wounds that I could find. I have been noticing, though, that for the past few days she has been laying down a lot - take some steps, lays down, walks to a different spot, lays down... She is eating and staying with the flock as they free roam, but she is laying down most of the time. Should I be doing something to try to help with a possible internal problem?