FB Junkie: Block these people entirely.  You won't see their posts even secondhand.  It will make it much easier to let them go.  (They won't know you've blocked them, so don't worry about them being weirded out.)

Dog: This is from a lifelong devoted pet owner: Stick to your guns and do not get the dog.  Or, if they do, move out.  Let them handle it for real.  It's terribly unfair to own an animal for which you have no time and in which you have no interest.  I no longer keep dogs because my work hours are too long and they're alone too much--cats are easier for me and I can have several so they are not alone.  Also, your husband is a nitwit.

Labels: moderation: toxicity, insult