How It Has Changed Over Time: Their ears have gone from none, to one, to two.

How This Change Benefits The Pokemon: The development of ears help keep the Snivy out of danger.

How It Has Changed Over Time: A Snivy starts off as a small 2' 0", then to 2' 07", then to a whopping 10' 10" on average.

How This Change Benefits The Pokemon: The smaller sizes of a Snivy help it keep itself out of danger with its quick speed. Once they get bigger (Serperior), they are able to finally gain to the ability to have a fair fight.

How It Has Changed Over Time: A Snivy started with 2 arms and 2 legs. They then grew bigger the more they evolved. However, the Snivy had a realization that I can't understand: they decided to forget about these body parts.

How This Change Benefits The Pokemon: The Snivy learned that without arms and legs, they could blend into their environment, without their arms and legs poking out of the brush. It is believed that it may allow them to sneak up on prey easily.

How It Has Changed Over Time: A Snivy went from a short tail, to a longer tail with more leaves, to their entire body being one whole part (including a tail).

How This Change Benefits The Pokemon: The longer the tail, and the more leaves, they are able to move around quicker and with sharp turns. Also, with the loss of arms and legs, the tail can be used to grab, move, and attack their enemies.