ORIGINAL: cascadedad
Hey OBF250, does your dog jump out of the back of your pickup also. Seriously, this could be the problem. When they land after jumping off of something high, the front shoulders take a lot of pressure.
The tail gate on my truck is only 5" higher than a stock z71 chvey with 285's on it which most of the bird hunters I know have and their dogsjump in and out every time. He's not jumping off a mountain. 19-20 times he gets out it in the dirt also. Some of the junk they jump over and run around/through in the field is alot worst on them than jumping in and out of my truck.