<human>: What are some of the most interesting facts about the pterodactyl?
<bot>: 
1. Pterodactyls were among the largest flying creatures to ever exist, with wingspans up to 10 feet wide and weighing as much as a small car.
2. They had long, sharp teeth that could easily pierce bone.
3. The name pterodactyl comes from the Greek words pteron (wing) and daktylos (finger), meaning “wing finger”.
4. Their diet consisted mostly of fish and small reptiles, but they also ate insects, amphibians, and even small mammals.
5. They lived in large colonies and had complex social structures, with males defending territories and females laying eggs in nests.