I will be moving back to Cambridge this June, and am looking for an apartment somewhere on the T in Cambridge--preferably Central Square--that will accept a small (15 lb.), friendly and well-behaved dog. I am a 36-year old professional woman, very responsible tenant w/ great credit, references, etc. I've spoken w/ some rental agents and know that my options will be a bit limited, so if anyone has any leads, I'd love to hear from you. Thanks!