Just finished reading Carl Hiasson's latest mystery, Basket Case, in which the hero fends off an intruder by bludgeoning him across the head and neck with a frozen Savannah monitor lizard named Colonel Tom (a la Hitchcock and the lamb roast?). Igwig has it good.

I once had an iguana named Max, who was about 10" long when he was given to me as a Christmas present. One year, about a ton of chopped veggies and three terrarium sizes later, I traded the now 3' long lizard for a 10 gallon fish tank and got some nice, small, colorful tropical fish. I did NOT share my bed with the iguana.