I def. second the research thing. I've rescued a few of these wonderful animals and they're quite a bit different than dogs and cats. The female just I got in, only 9 months old, was kept in a rabbit hutch most of her life and even though she's in a much larger cage now, all she did at first is pace from side to side in her cage, even though she had access to the house for on average 8-10 hours a day. Its heartbreaking that lack of knowledge and commitment could cause this beautiful creature to behave like that. So please, for your coati's sake, do your research. For example, most of them freak out at the sound of keys or the vaccuum. They don't like loud noises and are lactose intollerant. My new little girl loves her bottle still and loves fruit, as well. There is no proven rabies vaccine for them, and they are very particular in regards to other vaccines and anesthesia. Most vets won't touch them, so make sure you have one first. Most of them can't be litter trained, because its too much fun to dig and climb in and make a mess all over the floor. The best I've ever had only went to the bathroom in their cage, the worst, all over the floor and in my shoes.
Don't get me wrong, they can bring a ton of joy, but they are not for 99% of people. especially if you like the drywall on your walls, the stuffing in the cushions of your couch, the dog food in the bag and not all over the floor, and your socks in your bedroom and not in your coati's mouth as he/she runs around your house with them, playing "catch me if you can." I'm not an expert or anything, just personal experience. There's also a yahoo group for coatis you can join or feel free to email me any questions.