chihuahua sheds a lot! suddenly! what to do?

[chilover]

My 5 years old short haird chihuhua Xena suddenly started to shed a lot. She never did before. maybe just a little but not as much. I give her fish oil every day and she eats only natural canned and dry food (Wellness, Paul Newmant organics, Evanger's canned add Wenewe dry). what should i do? any suggestions? are there sime kind of supplements i could give her? she doesn't scratch or anythithing...

 

[misticaleclipse]

I don't know about the food you mentioned at all, so I'll leave that to the experts, but since its all of a sudden could it be something else shes irritated to? new detergent, air freshener, rugs, rug cleaner etc?