The Bible has a theology of serpents that is connected to the question of why the dinosaurs have for the most part disappeared.
Consider a few salient points:
1. God cursed the serpent to go on its belly and lick the dust – which presupposes that prior to the Fall, it did not go on its belly. Therefore it was either a walker, flyer or swimmer.
2. Of the reptile kind, all of the walkers and flyers have seemingly disappeared from the earth – possibly extinct, possibly hidden, but definitely not as common as they apparently once were. Definitely not walking around in the open where men can interact with them. Why are those particular animals gone? That is the question that even evolutionists are always trying to answer.
3. In the ancient world the word “serpent” meant animals that we would now consider “dinosaurs”. For example, in the Sumerian Legend of Atana, the eagle steals the serpent’s young, and the serpent in its agony over the loss of its young, “tore the ground with its claws”. Likewise medieval descriptions of encounters with small dinosaurs walking on legs or with wings are usually described by the person as having encountered “a serpent”.
4. In the ancient world the serpents/dragons appeared to be common and worshiped – until Christ came and Christianity went forth into the world. Theologically, that is the point in History where God intervened – Christ started winning, and the Dragon started losing. Interesting then, that dragons/giant serpents start to be increasingly scarce from that point forward in the historical record.
5. Returning to God’s curse on the serpent – God cursed Adam to die – but the curse was not fulfilled for almost 1000 years. God promised the woman deliverance through her “seed”, but that took 4,000 years. We tend to assume that God’s curse on the serpent was immediately fulfilled, but perhaps that is also a curse that was destined to take millennia to achieve, and furthermore that it would be achieved through the agency of the “seed of the woman” waging war on the flying and walking serpents until they are extinct.
6. It is occasionally reported that a snake was found with a leg and claw or two – indicating that snakes have the dna for legs and claws but it is normally turned off. (http://www.thesun.co.uk/sol/homepage/news/2636889/One-legged-snake-found-in-China.html) This suggests to me that dinosaurs turned into snakes, or rather snakes are dinosaurs in which God merely switched off the leg genes.
7. An examination of the Acamboro figurines as well as other ancient depictions of dinosaurs shows them to be far “snakier” in appearance and behavior than we imagine and depict them. For example, there are several of the acamboro figurines that show an apatasaures/sirush type creatures, but it is coiling it’s long neck and tail in the way a snake does. (http://www.bible.ca/tracks/tracks-acambaro-dinos.htm)
Likewise, it shows several encounters of therapod dinosaurs attacking men or women, but rather than attacking with teeth and jaws, as we have been taught by hollywood, the creature is depicted as having wrapped the human in its coils of its tail like a constrictor would, and then preparing to eat the victim. Thus the behavior of even the walking dinosaurs was much closer to that of an anaconda than a leopard.
Note that today, the reptile kinds – turtles, lizards, crocs and snakes – all go with their belly in contact with the ground – at least most of the time. God has humbled the serpent kind as per His curse.