no power?

where was the light? Ive never seen that... sure it wasnt the power mode light? there is a shift lock that does not allow the shifter to go anywhere other than N, D and 3 without pressing the brake in pretty far, so your dog shouldnt have been able to severely hurt anything. only other thing that could have happened was to knock the transfer case out of sync, in which case you would have heard gears grinding if it tried to go to 4lo.. but at highway speeds it wouldnt have engaged anyway and you would have been stuck between 4lo and 4hi

sounds like you should be in the clear though any physical damage would have shown itself right away