The Farm is a new zoo that introduces Premium levels. We're still getting a handle on all this, but one thing we're starting to look at is how many coins you get from various animals. We'll start putting those values here.
Premium status costs diamonds! And lots of them. Those coins you're collecting, those affect what level you'll be at if you're in premium - but they don't affect whether or not you're in premium at all. Activating premium costs:
That's extremely expensive! There's maybe also something about getting premium time as a bonus when you buy diamonds - I don't have the details on that yet.
Be aware that you will not gain points, after a certain level, without premium status. You'll reach equilibrium around level 5 - 8, and after that you can't really earn more diamonds than you're losing.
Farm exclusive animals:
Friendship animal: Polish chicken.
Your second animal gets half as many coins as your first, we think, and subsequent animals half again and again. So there's some math involved regarding how much space an animal takes up.
Holstein - 312 (190 xp)
Water Buffalo - 110
Turkey - 79
Yak - 50 (but cannot fit in a small!)
Friesian sheep - 48 (remember that you can keep two in a small enclosure, the second one gives half credit, for 72 total)
Shetland - 42 (63 for two)
Donkey - 40
Llama - 40
Reindeer - 34
Alpaca - 24
Pot-bellied pig - 7
Mallard - 4
Horse- 3
Domestic sheep - 1
Peacock - 1
Domestic pig - 1
Domestic goat - 1