This pokemon is mostly based in axolotls because of their amphibian status, dependance of water and charming look. But also I incorporated some dinosaur and nuclear reactor aspects.
And im not sure if the upper design fits the "Main design" standards, mainly because of the gas being released and the quality of the drawing.
Here i drew the same axolotl in different poses.
The upper left design was the first one.
http://img18.imageshack.us/img18/7576/83377667.jpg
Background
The gas it expells from its tail is so poisonous even muk feels sick when near of it. No bacteria is able to survive inside its tail.
Its skin needs water so it can absorb it and transform it into a very poisonous substance. The venenous gas that is released from its tail is the residue of the constant reactions his body produce to make poison.
Its tail is also capable of absorbing air and transform it into fire. However the fire must be released from its body as fast as it is produced. The only way of doing so is spitting it from its mouth.
The protuberances from its head can produce and keep constant fire with no need of the tail, also they supply the body with oxygen.
The holes in its shoulders legs and lower part of the body are no more than air ducts that avoid the body from becoming overheated.
Its skin needs water so it can absorb it and transform it into a very poisonous substance. The venenous gas that is released from its tail is the residue of the constant reactions his body produce to make poison.
Its tail is also capable of absorbing air and transform it into fire. However the fire must be released from its body as fast as it is produced. The only way of doing so is spitting it from its mouth.
The protuberances from its head can produce and keep constant fire with no need of the tail, also they supply the body with oxygen.
The holes in its shoulders legs and lower part of the body are no more than air ducts that avoid the body from becoming overheated.
Constructive criticism comments and opinions are highly appreciated.