The classifications of animal and pest are not mutually exclusive. Many animals are pests. Snakes are animals, but are not usually counted as pests.
No - the only 'pest' on this planet is (sadly) the human race ! We destroy the natural habitat of native animals to feed our demand for wood and farmland - yet - if a croc or a snake gets too close - we kill it as a pest ! Who's the REAL animal !
Pest control
A pest is an animal, an animal that has a habit of making trouble to other plants, or other animals.
Animal : Pest_____ : Weed? then Plant
a serpent is a snake, it is a type of reptile, but it is an animal.
A snake
there's none
pest
snake
The snake is an animal that has no tail.
It depends on how you view pests. If you are talking about the type of animal a fox is, then no, it is not a pest. If you are talking about pest as a level of annoyance, then it is a matter of personal opinion.
The snake is not offered as an animal, but players can buy a snake as a pet, for 400 gems. This pet can then be used for the "Ssssnake" pet game.