Rats. Rodents of almost any size
(Chipmunks and squirrels, the possible exception) Inside or out. Big or small.
Snakes. Garden, desert or tropical.
Drowning.
Losing my hearing.
Losing a loved one.
Getting hit by a car.
Ridicule.
Embarrassment.
Humilitaion.
Ignominy.
Homelessness.
Headstands.