(Some say they'll let go of warm blooded animals on their own; but the natural response, which I share, is to yank it off with a free hand and get drunk in a failed attempt to forget it). (treehugger.com)
Rabies is a viral disease that causes acute encephalitis in warm blooded animals. (fallsroadvet.com)
It's very well adapted to living inside warm blooded animals that eat a lot of food that gets broken down into sugar. (scientificamerican.com)