The Axolotl's at Fraser Aquarium caught my eye too. I had thoughts of buying one until when researching the Axolotl I read: "The water temperature should be kept cool, between 57-68 F (14-20 C), and never above 75 F (24 C)". An Axolotl would boil in my house during the summer months
Wow, I don't think I would know how to keep my water that cold unless I had a chiller or a dedicated airconditioned room. Even on a cold say, without heat, my house only gets down to about 64F in the dead of winter.