I guess it boils down to this IMO.. Many animals (espeacially dogs) are like people in a sense that we all have our own personalities. Labelling a whole breed because one attacks a small dog, or child just doesnt work. But we, as owners need to take deeper precautions when dealing with any dog or animal that has the potential to hurt another person, or animal. Any dog that has good weight to it, has the potential to inflict injuries to a human, or another dog/animal... So owners need to be responsible....... Which isn't difficult to do.
This does relate to the tiger story, because the owner didnt use enough caution when the boy approached the animal. Using a leash on a 350 pound CAT is not going to work IMO.... So he was completely at fault. Not the animal, not the boy.