Hey there, Sugar gliders and monkeys are totally different creatures. A sugar glider is a marsupial. Like an opposum, but they aren't a species of opposum. Here's a link to the Marsupial family tree.. http://www.brainyencyclopedia.com/encyclopedia/m/ma/marsupial.html Sugar gliders look a lot like flying squirrels and are probably an 11 on the 1-10 scale of pet care easyness. There's a lot of information on google for those who are interested. Because they are small, fragile, and rodent like, I doubt they would be compatible with ferrets. Ferrets probably couldn't resist a taste, either that or when they try to wrestle with it, their new friend breaks. Not a good picture. They run probably about $100-$200 dollars on average. As for monkeys, I don't know which kind it was that you saw, but they are a HUGE commitment and are probably like having a toddler that gets into absolutely everything around (that also turns into a wild animal, and can cause serious harm). Here's an article by the national geographic magazine about keeping monkeys as pets. http://news.nationalgeographic.com/news/ 2003/09/0916_030916_primatepets.html#main This link is quite profound. But be warned, it has graphic images of what a monkey can do to a human (as in bite, bruise, and beat up) http://www.petmonkey.info/presentation/Slide01.html http://www.petmonkey.info/index.htm (this has a lot of information) http://www.ippl.org/apr-03-23.html http://exoticpets.about.com/cs/primates/a/primatesaspets.htm I am overwhelemed at the amount of negative information i found. These sites i listed are the on the first page of a google search on "pet monkeys" (excluding two or three advertiesments) Here is a link for their care. http://mimi.essortment.com/petsmonkeycare_rgay.htm From the little bit I've read so far, it doesn't seem like a good idea to have a monkey as a pet. Let alone have them near your ferrets. Monkeys belong in the wild, not in your home. That's my stand, but do some research on your own and decide for yourself. There's tons of info on google, I encourage you to look. I hope i helped!! - Jules [Posted in FML issue 4695]