How does a 4yr old less than 2 lb. chihuahua go from being fine to not being able to walk the next morning?

was fine last nite til he had to come in from going potty for the nite, played with a couple of dog friends an hour or so before . . . . had…

ASKED BY Wilson on 5/17/13
TAGGED chihuahua, pinchednerve IN Other Health & Wellness