First, my exposure to biology is high-school. Should the answer to the question be obvious - please take a moment to laugh, and then point me in the right direction. A quick google search (or perhaps my search parameters were wrong) didn't give me what I seek.
Animals usually exhibit some form of reflex. What I'm curious about is this - Do all animals exhibit comparable reflex velocity? Here I use 'reflex velocity' to mean the amount of time elapsed between stimulus, and initiation of the reflex action.