"not with the snakes that infest these hills"
The only poisonous snake to be found in Italy is the common viper- better known in the UK as the adder. Adder bites are very rarely fatal, but they're extremely painful. For example, if you're bitten on the foot, it's likely that your whole leg will swell up for several days, and sometimes people experience pain for an entire year after being bitten- nasty! Of course, modern medicine can do a lot for people bitten by adders, so if it ever happens to you make sure you seek medical attention as soon as you can.
If the idea of gruesome poisonous snakes is a bit too much for you, you can experience fun, cartoon snakes by playing this game, a version of the mobile phone classic!