Here is the full list of all 16 Animal Up! achievements.
Save your first Animal
Save 500 Animals
Save 100 Tigers
Save 100 Rhinoceros
Save 100 Bears
Save 100 Cows
Save 100 Crocodiles
Save 100 Foxes
Save 100 Elephants
Save 100 Lions
Save 100 Monkeys
Save 100 Pandas
Save 100 Pigs
Save 100 Deers
Let fall your first Animal
Get 1K Coins