hi all ...
recently, kikko has done this weird jaw quiver or chatter thing ... he does it only every once in awhile, but everything else with him is normal - appetite, energy level, poopies, etc.. so should i be worried?
the only recent changes have been changing his food from i/d to optima (he's been eating this and cheerios as treats for the last few days) and that i moved his x-pen to the bathroom - which i have cleared everything in there for him so there's nothing he could get to. today i will start him on i/d ...
so i am at a lost, i don't know if i'm being overly concerned or not enough that this could be a sign of something ...

any thoughts would be greatly appreciated. thanks!
camly