Did not mean to sound condescending if it was taken that way.  But I have
seen  one of those big black buggers sting an dog on the nose and the dog
died badly when the antitoxin did not take effect in time.

Something for you to look at   even the smallest scorpion can kill  there is
a variety nick named " the Arizona boot taper for a reason" it is small to
fit in a boo but can kill a man with one sting
http://www.angelfire.com/tx4/scorpiones/index.html

I have no idea if cats are susceptible to  bark scorps but we have them in
our new house and I've been freaking out.  I'm deathly allergic to fire ants
so we assume I'll be the same with scorpions.  The little buggers can get in
through anything--I caught one shimming past the rubber weather strip around
our back door one night.  One of our cats was "pointing" to it.  Our three
girls have been very good about "pointing" but either keep their paws far
enough away to keep from getting stung or they don't react--I don't know
which.  I have found them, several times, just watching ones that they have
"cornered" between them, or sitting patiently watching one, like they're
pointing for me. We praise them profusely!

I was hesitant about having the house treated because of the girls, and
because I have heard that scorpions are hard to kill and it's a waste of
money but we finally had them treat almost a month ago--I just couldn't take
it anymore.  They poured boric acid in the outside outlets, bombed the attic
with it, also, and did a peripheral treatment around the house.  They
re-filled all of our weep holes with copper mesh (I think my husband had
used steel wool) We kept the girls in for a few days (not easy as they love
their kitty secured back yard with vinyl fences--can't get their claws in to
get up and over) as a precaution.  I still don't get up without putting my
sandals on at night and they still walk perimeter (inside the house) at
night, but we have only seen ONE in 3.5 weeks.  Before we had the treatment
done it was more than one a night.....eww.....

It's taken care of the spiders and harvestmen (aka Daddy longlegs) and such
around the house.  I hate to kill off all the bugs but the scorps and the
black widows (did I mention we had those, too?) were more than I could
handle, and the other bugs are great bait to attract them.  Maybe when they
quit building in our neighborhood (hill country, just outside of Austin, TX)
it will let up.  I've heard other new subdivisions around us have had the
same problems until the construction was done.  We'll see....it's going to
be a couple of years anyway...

So, bottom line, I'd advise doing what you can to control the
critters...I've got some other links I'll paste below about battling
scorpions that might be of assistance....oh, and a herpetologist friend of
mine said the way to tell if they are poisonous is: if they have big
pinchers they are meant to scare and are not very poisonous.  The smaller
the pinchers, the bigger the poison.

good luck!
http://www.getipm.com/thebestcontrol/bugstop/control_scorpions.htm

http://insects.tamu.edu/extension/bulletins/l-1678.html

http://environmentsensitive.com/DiatomaceousEarth.htm

http://www.epestsupply.com/scorpions.htm