Lesley,
I've never had an iguana, even though I was offered a couple, as I didn't have the space they require. I did house sit for a friend though a couple of times who owned a beautiful green one. He too had a room all to his self, but basically roam the whole house at times. He had an habit of getting behind you on the back of the sofa & chewing your hair. Lovely creature though.
Hamish,
Yes, beardies are a bit odd, all those spikes are just for show, that said they can look quite intimidating when they blow up there beard & it goes all black!
They seem to move less & less as they get older, but also they do require the viv very very hot at one end with a nice basking spot. If the vivs not warm enough they will be even more still. In their natural habitat they do though bask in the hot sun for hours with their belly rested on hot rocks. They need to do this to aid their digestive systems. Heat is the key to keeping beardies.
As to crickets, you can buy three different kinds, black, brown & silent. They're not really silent but much quieter. The secret is not to let them escape though.
