
Hi Linda
> She does seem better when she has a full tummy but as soon as we go back to just biscuit she doesnt eat much again.
Firstly that being the case I wouldn't go back to just plain dry complete with her. If the problem is food related and you've identified that as a possible cause then perhaps look into feeding a moist complete or half and half but TBH I would want to change to a food with different ingredients if I suspected that to be the cause. It will have nothing to do with the size of her teeth.
Bringing up bile regularly is something to be wary of if left untreated - there can be numerous reasons for this happening and unfortunately numerous problems as a result.
> She is usually fine after she has been sick but the last 2 times it seemed quite pinky orange and I was just a bit worried
This suggest possible blood in the vomit - the dog should be seen by a vet to establish the cause and best way to proceed.
> I would rather try different things with her before I take her to the vet, as she is otherwise a healthy little dog with loads of energy!
Otherwise seemingly healthy dogs can have serious underlying problems - I don't wish to alarm you but were this a child would you not immediately take it to a doctor rather than second guess what may be wrong?
regards, Teri