Tree Creepers, also known as Arboreal Dinosaurs, are a fictional species of dinosaur from the science fiction series Primeval. They resemble primates, but at the same time one can tell that they are a species of raptor. They lived in the Cretaceous, probably in Africa, where giants such as Spinosaurus and Ouranosaurus also lived. They have a unique way of killing they're prey. First, they climb up a tree. Then, they wait for a small animal to pass by below. Then, whenever they least suspect it, the Tree Creeper strangles the prey item, killing it.