Hi, everyone! Hope all is well. I'm posting here today because I am in some desperate need of advice. I have a wonderful male (2 years old next month), Lannister (aka Lanny) who is having some issues. In July, we unexpectedly lost his brother, Stannis. Ever since, Lanny has not been the same. He sits and stares at the wall, and has become very aggressive. I am the only person he tolerates. His entire life he has battled URIs. A couple weeks ago, a tumor popped up. I have had 6 other rats in the past 5/6 have had tumors, and none of them have ever grown this fast. I took Lanny to the vets last night to have it examined. It's grown so big, so fast that it can't keep up with it's own blood supply and an ulcer has developed. The vet found 4 other growths. She explained given his age, respiratory issues, stress levels, and general lack of health his entire life, that surgery is very risky. At the same time, these tumors are so aggressive that he will not live much longer without the removal of them.Lanny had a skin scrape down to test if he had mites, when he came back he sneezed blood all over me. With his URIs, he sometimes has porphyrin drainage, but this looked different. We got a black light out, and it was actually blood. I'm really terrified to have him operated on. What would you guys do in my situation? I am leaning towards doing it, because if I don't, he stands no chance at living. However, without Stan, his quality of life has definitely decreased.. Exponentially. He's been so aggressive, I'm not sure how he would respond if I introduced him to a new mate. I was thinking a spayed female around his age from a local rescue? If he tolerates the surgery and lives longer, I don't want him to be solo.He is receiving revolution for mites and we will treated prophylactically with antibiotics if I decide to go for it. Any input on surgery or any attempts to bond him with a new partner are appreciated. Thanks, everyone!