While your reasoning is logical , that was a bit of an asshole thing to do . I , too , would be very upset if I trusted someone was taking care of my dog and found out they weren ' t . The right thing to do would ' ve been telling brother no and giving him the option to find somewhere else for his dogmake a different decision about treatment . However , what ' s done is done . Your brother will probably grieve for a while , and may be very upset with you for a while too . Give him time . Don ' t expect him to just get over it . I ' m a bit more relaxed regarding chemo , since I do occasionally deal with it at work though they try to keep us from taking patients receiving chemo drugs . I understand how and why you panicked . I also understand why you didn ' t tell your brother though I see his side too . It ' ll be okay .