I love my job (veterinary technician) and love the animals I get to take care of. Of course, not all of the animals are real keen on the idea of me taking care of them. Occasionally we will get an animal that needs one of these on its chart:
This means that the animal has, at some point, shown signs of aggression and to never let your guard down when treating it. Some are not that nice.
Some really want our blood.
But this one takes it to a whole new level.