Here is the achievement list:
Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8
Level 9
Level 10
Level 11
Level 12
Level 13
Level 14
Level 15
Level 16
Level 17
Level 18
Level 19
Level 20
Level 21
Level 22
Level 23
Level 24
Level 25
Level 26
Level 27
Level 28
Level 29
Level 30
Level 31
Level 32
Level 33
Level 34
Level 35
Level 36
Level 37
Level 38
Level 39
Level 40
Level 41
Level 42
No
no
You can't sell animals in zoo world.
You can't. You can't sell anything in Zoo World.
There are currently 105 achievement levels, however you can continue to harvest treats and increase your experience level (XP) apparently unlimited. I'm currently at 248.
From your facebook wall/feed
In the store
you adopt them from feed or breed them
No way!!! Why would it be cheating??? I help out my friends and family on Zoo World Every Single Day!!!!!!!!!
You can get a turtle for your Zoo World from your Facebook feed when one of your friends finds a turtle in their zoo and has the option to post it for someone to "adopt" or "save" it. If your friend publishes the turtle to their feed, you could adopt it and put it in your zoo.
Chester zoo Timbuktu zoo Recross zoo
search in the facebook search tab