Actually, pandas are still the animals that are very easy to bring to 100%. You only need one enclosure to mate 5 males and 5 females from different sources. From the young you can then again create an inbreeding free 5/5 group and sell the rest. From these you will get young animals again. Many generations pass until the first problems appear. For me, the PZ Pandas are even a little too easy to boost, considering how hard it is in real life.
The most problematic animals I had in the zoo so far were tapirs, followed by chimpanzees.
Why do people need to even cheat at this type of game? What are they gaining really besides some white animals with good stats....
It's like that person who has all the highest records in the Zoopedia tab. 202 year old Gorilla? What have you gained from this?
What's the big fun about that, I never understood either. The gaming experience would suffer too much from that. But I just read on reddit many people who cheat just to troll others. It's the same as swatting. You don't have to imagine the great geniuses who use cheats. These are mostly people with hard deficits in all areas of life.
Above all I would like to say with my texts that you shouldn't panic directly just because there are good albino animals in the shop. Alone in my group there are 12 people who bring albino animals to 100% without cheats and honestly. And we are not the market leader or something like that. There will be such groups all over the world.
You have to be very critical on what animals you want to breed together and also it comes down on luck. But the more you breed, the higher the odds!