https://www.petmd.com/dog/conditions/cancer/c_multi_lymphadenopathy
This is worth a read. The lymph node swelling points to some sort of underlying infection of sorts which makes me question whether or not it's actually an ulcer. Without blood work and a stool sample it's hard to say what the cause is. Hopefully you can get to the bottom of it and get the appropriate treatment. Until then I agree with a bland diet to help keep some nutrition in your pup. Good luck.
This is worth a read. The lymph node swelling points to some sort of underlying infection of sorts which makes me question whether or not it's actually an ulcer. Without blood work and a stool sample it's hard to say what the cause is. Hopefully you can get to the bottom of it and get the appropriate treatment. Until then I agree with a bland diet to help keep some nutrition in your pup. Good luck.
