Yikes! That's one of biggest fears with Mz Klo when she jumps and flips for her toys! Her cousin, Gizmo, the Beagle recently had the same problem as Marlin. He got bitten on the bottom of his paw and jumped in the air and slipped a disc. But I hope it's just a sprain for Marlin. But, good news...Gizmo has recovered and is back to his goofy, happy, zippity-do-da ways! He was on prednisone, muscle relaxer and REST for quite a while. That was the hardest part, but he felt better within days! Finger, toes and paws crossed that Marlin will feel better quickly!!!