I am sorry you feel so bad and are hurt. I have co worker like that.. they just are not into dogs. I think I can understand someone doesn't want to hear about my dogs.... but to say hurtfull things to you is totally different.
I would very calmly tell them how you feel. Don't change your self, if you want a picture on your desk leave it there!!! I just would come here for the love and understanding a yorkie, animal lover needs