I have a girl Red-Nosed Pitt a little over a year old. She all of a sudden came in from the backyard last night with her left eye almost shut & twiching and is now starting to twich her whole head every little while. She has never done this before. Could she be having an alergic reaction to an insect bite or is it something else?

First if this condition is getting worse and not better take your love to a vet... second this could be so any things that you should consider taking her to a vet... this is the best advise I can give you... the only other thinng I would recommend is that if you can avoid a emergency clinic and see you pets personal vet... one they will know your pets history... and two it will cost less... wish I could help more..

Sounds like she got something in her eye. It's really best if you take her to the vet, better safe than sorry.