Staining around mouth

My 2 year old springer X King Charles has recently developed a red/auburn/pink staining around her mouth and her breath is slightly stronger than usual (no diet changes). She is her usual self, no other issues at all. Is there a cause for this? Or something I can do to help stop/remove it? It doesn’t seem to be irritating her so if it’s no big issue then I will leave her as is. Thanks in advance :)

Hello- saliva staining can often be brown in dogs, especially when superficial microbes - bacteria or yeast - are involved.  This can also smell a little.  The next logical question is therefore, why the extra saliva?  Is there a dental problem?  Is the conformation of her mouth much that drool collects there slightly (brachycephalic breeds)?  Is she struggling to swallow? Your vet may well be able to offer some anti yeast shampoo and try to help to pinpoint the underlying cause on examination.  I hope that something here helps.

Hi Liz, thanks you much for getting back to me so swiftly. The extra saliva is due to being a very greedy dog lol - in order to get these photos I had some treats in my hand and was holding these until I got some pictures. She doesn’t drool throughout the day, but will drool when she watches anyone eat and if she’s doing some tricks/obedience training for treats. She is extremely food motivated. Could the staining be due to the extra saliva produced throughout the day? If so, would cleaning this as it’s happening help? In regard to the staining - Next time she’s at the vets for a check up I will mention it to them too to check what further tests could be done. Many thanks