a 'tiger'

I think I'd better come clean with you about this. It's, um,-- it's not a virus, I'm afraid. You see, a virus is what we doctors call very, very small. So small, it could not possibly have made off with a whole leg. What we're looking for here is, I think,-- And this is no more than an educated guess, I'd like to make that clear. ...Is some multi-cellular life form with stripes, huge razor-sharp teeth, about eleven foot long, and of the genus Felis Horribilis: what we doctors, in fact,call a 'tiger'.