Brothers?

I was walking Max & Pazzo outside my apartment building on Sunday.  There was a lady out by the door.  And she asked me, "Are they brothers?" And I said "Yes."  As much as two different breeds of dogs can be brothers, right? Then she proceeded to say, "Oh, (insert laugh) but they are different breeds, so they aren't really brothers."  She really thought they had come from the same mother! They don't look alike at all.  I don't know what was going on inside her head.  "Well, no, they are brothers from different mothers," I smiled.