I am the owner of a 1 year old, 8 lb chihuahua. She is extremely interactive, friendly, playful...but a bit skiddish around strangers. She has not been sick one time since we purchased her January 2008. Tonight, however, she jumped down from the sofa...laid on her side shaking...then could not walk when she tried to come to me. Her back legs seemed to be paralyzed. She trembled while I held her (I know chihuahuas can be nervous but she isn't at all) This lasted for about 5 minutes, then she returned to play as normal. One thing that has me concerned is that I dropped a package of white chocolate morsels (very tiny) this afternoon. Before I could get them all picked up, she consumed two or three of them. Could this have caused a reaction 5-6 hours later? If unlikely, could you shed any light on what might have happened that would cause these types of symptoms? She is the absolute love of my life and I plan to take her to the vet tomorrow, but was hoping for another expert opinion. Thank you, in advance, for your time. (Jazzie's mom)