[Ponyup]

I think my little boy may have this. For the past few weeks once a week or so when he would come to the door he would act lame on his back left leg. I thought maybe he had slept on it funny. After a few minutes he'd go back to normal. This week it seems to be happening more frequently. He went to the vet tuesday & got shots. Then we took him out to my moms farm to play & he played hard. Since then he acts like he doesn't feel good & just wants to sleep all the time. Last night he had been sleeping on the couch with my husband & when he got up he wouldn't put his left leg down & wouldn't jump up on couches. He limped around for a few minutes & then it was fine. It seems to only happen right after he gets up from sleeping, not while running or anything. I'm just really concerned. He's a very active boy & he's big, he was 13.5 when he went to the vet. He'll be 4 years old in May. If I need to do something I want to do it right away so as not to cause him additional pain & problems.