My dog just had pups, November. If she comes on heat now in February, is it dangerous for her to have another litter so close?

Yes it absolutely is but what the hell are you playing at. Your questions are either a load of B.S or you are running a serious puppy farm there.

Your other question is about NEW BORN pit bull pups, not 3 month old ones, and you've told us your chihuahua is pregnant. Your cat gave birth a few weeks ago also.

YES! Seriously, are you running a glorified puppy mill at your home? Just stop it and get ALL of your dog's altered. You aren't doing the world any favors. Pretty soon you're going to run out of people who'll by your BACKYARD BRED dogs, so don't create anymore of them. It's people like you that are the one's who contribute to the overpopulation of dogs, many of them ending up in shelters and rescues, and no doubt some of them being euthanized. You aren't even taking proper care of your dogs. Why are you breeding more of them? Come on......don't you have ANY common sense or ethics?

Have her spayed. What's the matter with you?

i will just asking that is all

wow you are really clueless...... get her fixed and just love her