Was there an actual stuffed BFF in this exhibit? I can't tell from the photo. Presumably they didn't go shoot one as it seems like that would be about illegal as it could possibly be.
I noticed that they also have a kakapo and a kiwi. I wonder how they got these specimens?
Overall do you consider this place to be a legitimate museum of natural history like the Smithsonian or the American Museum of Natural History? Some of it looks that way and some of it looks like a really gaudy display of hunting trophies (i.e, the Mcelroy Hall).
I am almost positive that there is a black-footed ferret in the exhibit, and the museum could have obtained a dead one from a variety of sources (farm, zoo, etc). The kakapo and brown kiwi were delights to see, as was the saiga, black-backed jackal, 120 species of antelope, etc. One bonus of seeing taxidermy at work is that an individual can stand a couple of feet away from dead animals and study their physique instead of viewing them from a considerable distance in a zoo.
Your last question is a tough one, as I have visited the museums of natural history in both New York City and Washington, D.C, and International Wildlife Museum is not in the same league. It seems to have had a controversial past as a storage facility for hunting trophies, and yet there are loads of conservation-themed signs and messages adorning the walls as I suspect that its approach to wildlife has softened over the years. One bonus is that it is only about 15 minutes from ASDM (Arizona-Sonora Desert Museum) and that establishment is most definitely outstanding in every aspect.