Most pterosaurs traveled primarily by flying. However, all pterosaurs were capable of walking. They were quadrupeds, walking by folding their wings and using their wings and feet to bear their weight.
Pterodactylus had two feet, but they walked on their feet as well as their wings, making them quadrupeds. If you are referring to how many feet are in their wingspan, it is estimated that the wingspan of an adult Pterodactylus was about 5 feet.
Pterodactylus primarily traveled by flying. It would have occasionally walked on all fours or even climbed in trees.
There are far too many differences to list, but here are a few major ones. Pterodactylus was a pterosaur, eagles are birds. Pterodactylus was partially covered in hair-like pycnofibers, eagles are almost completely covered in feathers. Pterodactylus had a long neck, long jaws, and lots of tiny teeth, while eagles have a short neck, a short, curved beak, and no teeth. Pterodactylus would have killed its prey with its teeth, while eagles kill their prey with their talons. Pterodactylus walked on all fours, while eagles walk on two feet.
A flying dinosaur
In the sky.
Pterodactylidae
Pterodactylus isn't known from any adult specimens. However, based on the size and development levels of the many juvenile Pterodactylus that have been found, paleontologists estimate that Pterodactylus had a wingspan of about 5 feet. it has small bodies
Pterodactylus and Stegosaurus probably mostly ignored each other. Pterodactylus was far too small to hunt Stegosaurus, and Stegosaurus eggs probably had a shell too thick for a Pterodactylus to break it.
Pterodactylus had no armor whatsoever. In the case of an attack by a predator, Pterodactylus would have flown away to escape.
Pterodactylus adults probably grew to have a wingspan of about 5 feet. No fossils of adult Pterodactylus have been discovered, so that size is an estimate made by paleontologists, based on the size and development level of the many juvenile Pterodactylus fossils that have been found.
A small flying Pterosaur.
Pterodactylus was small and built for flight, so it wasn't designed with the kind of durability to fight. Perhaps they fought with other Pterodactylus, but there is no evidence that they fought with anything. If attacked, a Pterodactylus would just fly away, like a bird.