A quick read says rabies vac can indeed give reaction like this, and that small dogs in particular may be more likely to react. Also that combo shots are more dangerous for them.
If they don’t think it’s allergy why did they give you Benadryl? Just to be sure?
They gave it too her in a shot form in the Vets Office but I do keep it on hand myself for the dogs first aid in event of stings etc.
Benadryl is also good for other uses from controlling adverse reactions too allergies. So that part made perfect sense to me. I used to break out in Hives for no determined reason and a shot of Benadryl in the sitter was the usual Emergency Room Protocol. Thanks for the Rabies Info. I have a year now to do some serious digging.