Hello.. My dog turns 10 tomorrow. Over the past month we noticed she has developed a mass over her nipple and has been constantly licking her butt to the point where it’s raw. She had diarrea for a few days and then she finally had a solid one and the swelling on her butt went away and she stopped licking. Today she woke up lethargic and limping and crying in pain when she walks. The lump has gotten bigger. I gave her some pain meds from our last visit to the vet – 6 months ago she was attacked by another dog developed an abcscess – was treated and meds and got better. She’s old now and I’ve always had a hard time taking her to the vet. She’s a large german shepherd and can be pretty aggressive but is a wonderful family dog and my best friend. I am pretty sure she has cancer… I am trying to decide what to do. I don’t want to put her down too soon but I don’t want her to be in pain and suffer. She has been lethargic today but still eats and for the last week she’s been super playful and happy. Vets are expensive and it puts my dog thru so much stress and the vets hate her.. I think I’ve given all details of her story over the last 6 months. She has always been a healthy dog. Can you give me any advice? Thank you!