1600 hours is insane gameplay loop not content size imo, I have that amount of hours in a few game but they’re either fighting games or ARPGs which are repetitive by nature.

Animals who spend significant amounts of times in zoos can’t survive in the wilderness, if that’s what you meant. Ones that are taken in for rehabilitation are kept in specific environments so as to not get used to captivity and for as short a time as possible so they don’t get used to it.