Since before she turned 1, our now 2 year old (24 month) Labrador has occasionally shown a slight stiffness in a back leg when getting up from resting after exuberant playing/running. It’s practically a given when we have her littermate visit and they go wild playing for an hour in our yard. I’ll see her keeping weight off one back leg, and then in a matter of minutes, she’s moving normally. I haven’t noticed if it’s always one leg or the other. She’s healthy. She’s a healthy weight—though she was temporarily overweight for about 4 months last year. We got her right back down when our vet pointed out the problem. She takes her heartworm and flea/tick medicines each month. She’s a happy, and energetic pup. She has at least two walks a day, plus daily swimming in our pool during the summer. She’s our first Lab—and the first dog I’ve ever raised from puppyhood—and I hadn’t thought much about it, since it goes away so quickly. I’m thinking about it now because the other night I was scrolling through the forum and happened to see some posts about hip dysplasia and arthritis. I have a call into her vet, but was wondering if the consensus here is that this is always cause for concern and intervention, or if it is ever just muscle soreness from zooming around. I ordered some joint care supplements last night, just as a precaution, and figure they won’t do any harm. Thanks.