I got Beave at 5 weeks. He walked almost like he was drunk and couldn't walk straight at all, he didn't even play for a few weeks. He couldn't get out of his little bed or anything for about a week and a half. Just so you know, he's now jumping up to the top of our 6 ft. freezer knocking stuff off. At about 2 1/2 months he could jump onto our overly high bed(you know the ones you need a step stool to get in?) He climbs trees etc. I wouldn't worry unless he stops improving. But if you ARE worried, by all meens take him in to put yourself at rest.