I hope you will update us on what happened; I DO have a small zoo (3 cats, 1 dog, six snakes, four crested geckos, one leopard gecko, two nano fishtanks and one 75g tropical community) and we just have to be straight up within the first few conversations with a potential landlord. Our current landlord doesn't care as long as pet deposits are in; I've had to save a small fortune for those but I also always get them back. Offering sizeable pet deposits for each animal, even if it's expensive, seems to help as does photos of the secure enclosures. If your landlord is amenable some of them change their minds when they meet the animal in question.
I have to look three times as hard as a typical renter...not only do I have a lot of pets, most of them are exotic, my fishtanks are seen by some as a disaster waiting to happen, and my dog is a hefty 72 pounds. It's a pain and we get turned down a lot. But I figure it's just the price of keeping these animals, everything in life is a tradeoff.