In my book Z: Answers for the Final Generation, I wrote that when God creates his promised new earth (see Isaiah 65.17 and Revelation 21.1) even dinosaurs will be restored. And I wrote that they will be so tame that a child will be able to ride safely on the back of a velociraptor! I believed these audacious predictions were firmly anchored in Bible prophecy, for in Acts 3.21 (King James Version) we find the apostle Peter telling his Jewish audience that Jesus had gone back to heaven "until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began". I took this to mean that in the new earth everything God originally made, including dinosaurs, will be restored, and once more it will all be very good as it was in the beginning before man's sin messed things up. In particular, the prophets tell us that there will be no more death, so 'the wolf and the lamb shall feed together, the lion shall eat straw like the ox; and dust shall be the serpent's food. They shall not hurt nor destroy in all my holy mountain, says the Lord.' (Isaiah 65.25). Therefore I believed myself to be on safe ground in predicting the presence of tame velociraptors in the new world. However I've now had second thoughts, and I bet you can't guess why...
Firstly, if God did make every living creature and he declared them all to be good, would he really have made huge terrifying flesh-eating dinosaurs like the Tyrannosaurus Rex or families of murderous Velociraptors when the human race consisted of only two people? How long would Adam and Eve have survived in their company? Secondly, when he brought 'every beast according to its kind' (Genesis 7.14) into the safety of the ark shortly before the Flood, why did 'every beast' evidently exclude dinosaurs? For it's obvious to any impartial investigator that the dinosaur graveyards in many parts of the earth, such as Wyoming where 10,000 dinosaurs have been fossilized in a layer of mud (https://isgenesishistory.com/10000-dinosaurs), are best explained by a sudden water-borne catastrophy unparalleled in the history of the planet. It's true that the ark might not have been big enough for apatosauri and other monsters, but God could easily have included pairs of babies if he had wanted to. So why didn't he if they were part of his original creation?
An answer to these questions suggested itself to me recently after I read a strange book by Rob Skiba entitled Archon Invasion - the Rise, Fall and Return of the Nephilim. Skiba's thesis is based on some verses in Genesis 6.2-4, which appear to say that angelic beings once mated with human women and produced giants. There are more detailed accounts of this event in other Jewish literature written before the time of Christ, and the same belief is also found in non-Jewish sources such as an ancient Sumerian text from Mesopatamia which described how '..a god and a man will be mixed together...' Atrahasis I) It is perfectly possible that a human mother could produce a giant if her baby was of normal size when it was born but didn't stop growing in its teens. This could happen if the pituitary gland failed to switch off the growth hormones when it should. (When I was a child we had a neighbour whose hands didn't stop growing.) And if you find it hard to believe that a heavenly being could unite with a human mother to produce a child, what about the birth of Jesus Christ?
There is substantial evidence that giants did once inhabit the earth, such as the enormous buildings in Petra, the legends in many separate cultures, and of course the Biblical record. When Moses sent spies into Canaan they reported the existence of giants there: "All the people we saw in it are men of great stature. And there we saw the Nephilim (the sons of Anak, who come from the Nephilim); and we seemed to ourselves like grasshoppers, and so we seemed to them.." (Numbers 13.32,33). Some giants continued to live even up to the time of King David, when he and his companions slew the giant Goliath and his four brothers. In fact Rob Skiba maintains that the chief reason God told the Hebrew army to utterly destroy the inhabitants of Canaan, men, women and children, was to obliterate the aberrations that had occurred as a result of that angelic interference with God's original DNA.
So let's suppose that giants did originate through the interaction of angelic beings with human women. Could such angels have gone further? In the book of Leviticus death is prescribed for acts of bestiality, so the practice must have been known, and this is how I think dinosaurs might have originated. If angelic beings mated with women to produce abnormal giant offspring, might some of them not instead have mated with animals and produced the dinosaurs? Many dinosaurs are similar to giant lizards, after all. If dinosaurs were not part of God's creation then he could indeed have declared as good everything that he created, and this would also explain why he utilized the flood to destroy those creatures that he had not originally made. In this case the restoration of everything that God originally made will not after all include the dinosaurs, and sadly neither you nor I will be able to hitch a lift on the back of one!