Larry Lennhoff presents a beautiful fable:
"When the time came for Hashem to give the Torah, he went to all the species of dinosaurs. Hashem approached Tyrannosaurus Rex and asked "Will you accept my torah?" T. Rex asked "What does it say?" Hashem said "Of all the animals that walk on the land, these you may eat..." T. Rex said "I am the mightiest carnivore to ever walk on the land. Anything and everything is my prey. I will not accept the Torah."
Then Hashem approached the Apatosaurus. "Will you accept my Torah?" "What does it say?" "The fire shall be kept burning on the altar continually, it may not be extinguished." "Oh no", the Aptosaurus replied. "Fire is wild and uncontrolled, and when the land burns we must flee before it or die. I couldn't keep a fire burning. I won't accept the Torah."
Hashem went to the Velociraptor, from there to all the other species of dinosaurs. None would accept the Torah.
Then a small Hadrocodium wui, the earliest mammal spoke up. "I will accept the Torah, Hashem". Hashem said "But you are too small and feeble - you cannot fulfill the mitzvot. But because your desire to serve me exceeds your ability, I will make sure your descendants have the ability you desire. And the dinosaurs shall learn that without my Torah they have no purpose."
This could have come from the Hertz Chumash, והמשכיל ידום.