I have a friend who owns two cats that are under a year. They are very healthy (just had a vet check recently this year), spayed and neutered, and have their shots and wormer, but the problem is, they are very uncoordinated! The cats run into walls and have trouble jumping on and off things. This only happens when they are playing. I've never seen this and I was curious if anyone knows anything about this behavior? Will they grow out of this?