2. I don't buy the arguments made about animals needing outdoor access, within reason.
@Corangurilla mentioned thinking small cats need outdoor access, but I'm asking in return- why do you think this is a necessity? Especially in zoos with colder climates, I'd rather see a great indoor exhibit than an equal-quality outdoor habitat only usable half the year, paired with a mediocre winter holding. For most species, equally good welfare can be achieved in entirely indoor exhibits, when designed correctly. A better argument would be a need for natural sunlight- which I think is more important for a wider array of species, but can be achieved in an indoor exhibit (ex. special windows, geodesic domes, etc.)