I rescued an iguana that large once! Her body was about two feet long and her tail was another four. I carried her something like 30 city blocks inside my coat, because it was early fall and chilly. I only took her because a friend asked me to come see her -- the family was giving her away and he was worried about her. Turns out they had only been feeding her CANNED CARROTS, no lights or heat, kept her in a dog crate that barely fit her body (her poor tail was twisted around her) and were planning on just letting her loose in the park if they couldn't find an adopter! So I decided I would just take her. Big mistake, of course, but when I got her home she happily ate about a dozen grape tomatoes, some pizza crust, a bunch of lettuce, grapes...she was great. She hated them, hissed and flared and spit, but with me she was totally docile. Wonderful animal. I adored her. I named her Sunny
But I was very worried -- she had what looked like an abcess in her mouth that the owners had been (get this) cleaning out with RUBBING ALCOHOL. But I was fairly sure that's not what it was, so I took her to the emergency vet. Turned out she had Metabolic Bone Disease that was SO advanced she wasn't going to live. Ultimately we had to put her down because she was suffering and it would have cost THOUSANDS to give her even a month or two more of life. Poor girl. ;(
But when I spoke to the exotics vet, she said yes, my research was right -- apparently a fully grown adult iguana's MINIMUM cage requirements are 7 foot high by 10 foot wide by at least 5 foot deep!
I do miss Sunny, though. She and I had a real thing. Iguanas are great! Hope this one finds a happy ending.