ookay so i bought a new puppy and they gave him vaccination in the pet store..(the guy mixed 2 bottle of liquid in one needle though) ...anyway..when i got home the puppy was jumpy and still active..but after 30 minutes he started to shake really much and became really sleepy...and when he sleeps his front legs were straight and he was shaking very badly...he's a 4 months old mini pinscher and i just have no idea why he is like that cuz he seems healthy when i bought him..