cavalier king charles spaniel help?

  i have an 8 month cavalier. for the past few weeks on one side of her mussle she has lost some fur and its very pink. she hasnt touched it and it doesnt seem to be bothering her but its concerning me. we switched her over to solid gold from wellness about a month and a half ago if that could have something to do with it. does anybody know if this should be something to be worried about? should we go to the vet?



pictures of her mouth VVV

http://i56.tinypic.com/dvpkyh.jpg

http://i53.tinypic.com/2la3fva.jpg
Adorable Cavalier you've got there. This doesn't appear to be from the change of food. Looks like possibly a parasite skin disorder or a form of mange. Would make an appointment with the vet.
Yes, you certainly should go to the vet! It could be a parasite or any number of things.
I would call a vet and schedule an appointment
This is not a food problem. You need a vet.
I would take her to the vet!! She's adorable!!
Whenever in doubt go to the Vet ...
looks like a mite must go to the vets as it will slowly spread