Is it true that Jurassic park could never actually exist due to the half life of DNA which is around 247 years. As well as this could you develop a being of which has the abilities to camouflage its self like a chameleon and have the abilities to hide its self from thermal imagery? As well as this on a side note what allows a snake to find its prey? Is it the radiation from a mass of heat signatures and/or that it can truly smell with its tongue?