I would have the vet check it out. Could be early signs of something.

I have problems with Roxy, but the vet doesn't know what's going on. She is really clumsy and uncoordinated. She falls and bumps into things all the time. He checked her eyes and ears and said she appears to be healthy. He said it might be that she just didn't develop well from being chained up the 1st year of her life. (She's a sleddog rescue.)