dbrk9 - puppy's gait was unusual, not just worrysome hip sway side to side, but knees together and kicking out of left leg (worst of the two hips). Very wobbly walk. Throwing leg out to side when sitting - much more extreme than lazy puppy sit. Leaning against wall, etc for support when sitting. Very thin from waist to hind quarters/little muscular development in hind end - not using rear legs much, so muscle isn't developing well. Low appetite - presumably from pain. Won't walk far on a leash - lays down. Started bunny-hopping rear legs when running. Episodic lameness - limping left leg, then right leg. Evidence of pain - snapping at us when we pet lower back, hind quarters; whimpering when laying down, standing up. Intial signs observed at 4 mos of age, progressively worsening, so we had non-anesthesia X-rays completed.