I wonder this too. Esp. here in Texas. When my poor 7 pound Yorkie mix is shaking and freezing cold, and totally immobile for at least 10 hours afterwards, while I hold her in my arms and have her covered with a blanket... and my 15 pound Shih Tzu is crying and wincing in pain for 10 hours afterwards.... I wonder are they overdosing them??? Makes me not want to take them again for their shots next year, but then I feel like a bad mother... either way I feel bad
