AIBU to get upset and angry at DP when he casually announces that he's fed my dogs chocolate. Again. Despite me having previously, on more than one occasion, told him it's poisonous for dogs and not to feed it to them.
His defense is that it was only a little bit (they're Chihuahuas so it wouldn't take much) and that he used to give his previous dog (Greyhound / Collie mix) the occasional bit and she didn't drop dead. He thinks it's bullshit that chocolate is actually poisonous to dogs.