None. Babies don't have the motor skills or the depth perception to change a light bulb.
It was on a strict diet of worms. edit: changed pronoun to avoid ambiguity
One less now, because the one who tried to steal the light bulb was shot by the cops.
None. PETA can't change anything.
Still counting. Those darned birds can't seem to cross the road to get over here to screw in the light bulb.
They always turn out blurry from him shaking them.
One is fun to hit with a sledgehammer, the other is a watermelon.
Depth perception
Because he had no depth perception.