Quote Originally Posted by Sawin View Post
It's actually not as far fetched as one might think. There are several known fungi and protozoa that already effectively make zombies out of living creatures. Look up toxoplasmosa gondii for one. It can be carried by most warm blooded animals, including humans... It makes rats actually go toward cats, so they will get eaten and the protozoa can reproduce in the cats intestines. The protozoa can only reproduce in feline guts... The scary part is about 1/3 of humans carry this protozoa too, and it's changing. It's actually already showing up in studies related to human suicide. You think I'm kidding? Look it up.

That doesn't even touch on the neurotoxin possibilities too! Let the zombie hoards begin!
Similarly, cordyceps take over the brain and force the host to do things outside of the norm. Like the cordyceps that effect ants, they take over, make the ant climb to unnaturally high up altitudes (for ants) and then the fungus erupts out of the ant's head and disperses spores to infect other ants.

This concept is seen infecting humans in the horror/survival game "The Last Of Us."