My little guy (14 weeks now) jumps in the middle of naps! he'll just start moving out of nowhere... then a few minutes later.. again same thing. Even if there aren't any other noises around... my question is... has he been scared of something that makes him do that or is it just reflex? We have a small dog and he's been scared from his barking a couple times when he was caught off guard.. could that be it? I'll def bring it up during his next ped visit