My hedgehog has had a small bump growing on her mouth for a year. Recently it has rapidly grown in the past few months. It is a huge red mass on the side of her mouth and a white like mass is on the top of the inside of her mouth. My vet had no idea what it was ( I live in the middle of now-where with no exotic vet) and said to make her comfortable. It's been about two months and half of the tumour mass has fell off. It is bloody and still there. Half remains on the outside and the white remains on the inside. She still goes on her wheel, drinks water, eats and uses the litter. I'm at a loss to what this thing is. I have attached a photo. As you can see the red is on the outside and the white matter is leading to the roof her mouth.