Hello I have noticed a small softish lump on the outer end of my dog's top eyelid which is next to, I think vets call them little skin tag. I've gently squeezed it and watery blood comes out of it? I'm been bathing it with some salt water. She is an 8 year old staffie cross. Not sure if she has just caught her eye on something but I'm very worried, please help. Thank you, Natalie.