Try Louisianna,
Water mocassin snakes (aggressive, fast and poisonious)
Chiggers, bite the crap out of you and imbed themselves in your skin causing nasty scars and rashes,
Gators, capable of eating a full size person.
And about 10,000 other species of spiders, flys and bugs.
Worst things in Florida are the snakes and gators. :-) besides the people anyway.
Arizona has rattlesnakes, scorpions, gila monsters, and grasshoppers that look like the military designed them for some futuristic warfare.
Every state has it's critters, but it's how often you run across them that matters the most I guess.
In my lifetime I have been bitten by two rattlesnakes, lots of scorpions, one black widow spider, an owl (don't ask) a jack rabbit (don't ask) various non poisonous snakes and got in a fight with a west coast eel over my spear about 60 feet under water off the coast.
Now get this (ALL of them were in California) :-)
Once we moved to AZ I once got nailed by a baby scorpion when I put my hand down on the ground to get up when I was camping.
Going by this, California is WAY more dangerous. :-)