Overall, Moses is pretty healthy and his vet says he looks good for his age.. but I have a couple questions. So tonight when I was taking him and Cali out to the bathroom, we got to the door (he stopped at the stairs) and his lower back looked like it was cramping. This is a horrible description, but it seemed like it was a spasm of some sort. I've seen him do it before but it hasn't happened for awhile. It's just his lower back and he went into a squat position and it appeared like he was thrusted his butt inward. Also, he's had trouble for the last while jumping up on chairs and falling... but never seems to be in pain, if that's any help. He's always up for a walk as well and still makes a run if he sees a cat in the yard. I'm pretty sure I'm going to talk to my mom about talking to the vet tomorrow because although he brushed the spasm/cramping off like it was nothing and just happily walked down the stairs, it couldn't have been comfortable and I highly, highly doubt it's anything close to normal for even an older dog. He's almost eleven and probably forty five/fifty pounds. ETA: I have no clue if this is relevant either, but he also tends to "sway" his butt from side to side. If you pet one side, he'll swing it towards you and if he's on a walk, just touching the leash to one side will get him to turn his butt in.