We noticed Skippy start limping a little less than 2 weeks ago. At first we thought it might be a slight sprain resulting from his falling off a picnic bench, and weren't too worried as it seemed to become more and more gradual in the days following that. But this week it still seems as pronounced as it first was. I've thoroughly (to the best of my non-expert abilities) examined his paws, front legs, and shoulders, and he does not appear to exhibit any pain or discomfort when I move or apply pressure to any of those parts.
I'm worried that it might be a Luxating Patella or something more sinister than a sprain -- are general vets typically able to diagnose this on a basic visit, or will he need to be referred to a specialist and have x-rays done?
Here is a short video showing Skippy's current walking movement, if anyone is able to recognize what the issue might be just from seeing his gait. His limping in the video is a little more pronounced initially and he appears sluggish because he had just woken up from a nap in our kitchen (as you can tell from his pressed-in face), but he has no problems running when going for a treat or ball --