my baby is acting strange

Question
My 2 yr old chihuahua Tinkerbell has been displaying rather unusual behavior. She is normally a very happy dog who cuddles up next to anyone sitting and especially if you have a blanket. Lately she is snapping at anyone who tries to touch her, even me and i'm her favorite. She goes into the pin only if everyone is leaving home and that's rare. When we lift the pin up she normally runs out immediately, however for about a week she has been hiding under her blanket and refusing to leave the pin. I came home from work and went to the pin and lifted it up and she would not move. I reached in and tried to pick her up and she tried to bite me. The next morning I lifted it and she came out and went potty outside as normal but when she came back in she when and stood back by the pin, i lifted it and she went back in. It is very unusual for her to snap at me, when i reach for her she normally turns over on her back so i can pick her up. She is hiding under the blanket and not wanting anyone to touch her and I can't understand why. Do you think I need to take her to the vet. Let me add she has been really protective over a stuffed animal and carrying it like a baby and following it if you pick it up and snapping when you try to touch her when she is with it. Could she be thinking it's her pup. She is not fixed and has never has puppies.

Answer
Hello Tabitha, I think your little chi needs to see the vet.  She may be in some kind of pain?????  This is very odd behavior and your vet should be able to figure out what is wrong.
They may need to do a little bit of blood work to see how her levels are.

Best wishes,

Marie Peppers LPN MA